{"id":42770,"date":"2020-09-18T19:57:07","date_gmt":"2020-09-18T14:27:07","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=42770"},"modified":"2020-09-18T19:57:07","modified_gmt":"2020-09-18T14:27:07","slug":"trigonometry-questions-for-ssc-cgl-tier-2-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/trigonometry-questions-for-ssc-cgl-tier-2-pdf\/","title":{"rendered":"Trigonometry Questions for SSC CGL Tier 2 PDF"},"content":{"rendered":"<h2><span style=\"text-decoration: underline;\"><strong>Trigonometry Questions for SSC CGL Tier 2 PDF<\/strong><\/span><\/h2>\n<p>Download SSC CGL Tier 2 Trigonometry Questions PDF. Top 15 SSC CGL Tier 2 Trigonometry questions based on asked questions in previous exam papers very important for the SSC exam.<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/10201\" target=\"_blank\" class=\"btn btn-danger  download\">Download Trigonometry Questions for SSC CGL Tier 2 PDF<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/ssc-cgl-tier-2-mock-tests\" target=\"_blank\" class=\"btn btn-info \">Get 10 SSC CGL Tier-2 Mocks for Rs. 149<\/a><\/p>\n<p>Take <a href=\"https:\/\/cracku.in\/ssc-cgl-tier-2-mock-tests\" target=\"_blank\" rel=\"noopener noreferrer\">SSC CGL Tier-2 Mock Tests<\/a><\/p>\n<p>Download <a href=\"https:\/\/cracku.in\/ssc-cgl-tier-2-previous-papers\" target=\"_blank\" rel=\"noopener noreferrer\">SSC CGL Tier-2 Previous Papers PDF<\/a><\/p>\n<p><b>Question 1:\u00a0<\/b>If 0\u00b0 \u2264 A \u2264 90\u00b0, the simplified form of the given expression sin A cos A (tan A &#8211; cot A) is<\/p>\n<p>a)\u00a01<\/p>\n<p>b)\u00a01 &#8211; 2 $sin^2$ A<\/p>\n<p>c)\u00a02 $sin^2$ A &#8211; 1<\/p>\n<p>d)\u00a01 &#8211; cos A<\/p>\n<p><b>Question 2:\u00a0<\/b>If a cos \u03b8 + b sin \u03b8 = p and a sin \u03b8 &#8211; b cos \u03b8 = q, then the relation between a, b, p and q is<\/p>\n<p>a)\u00a0$a^{2}- b^{2} = p^{2} &#8211; q^{2}$<\/p>\n<p>b)\u00a0$a^{2} + b^{2} = p^{2}+ q^{2}$<\/p>\n<p>c)\u00a0$a+b=p+q$<\/p>\n<p>d)\u00a0$a- b=p-q$<\/p>\n<p><b>Question 3:\u00a0<\/b>If $2\\sin\\theta+\\cos\\theta-\\frac{7}{3}$ then the value of $(\\tan^{2}\\theta-\\sec^{2}\\theta)$<span class=\"redactor-invisible-space\"> is <\/span><\/p>\n<p>a)\u00a00<\/p>\n<p>b)\u00a0-1<\/p>\n<p>c)\u00a0$\\frac{3}{7}$<\/p>\n<p>d)\u00a0$\\frac{7}{3}$<\/p>\n<p><b>Question 4:\u00a0<\/b>If tan \u03b8 + cot \u03b8 = 2, then the value of $tan^n \\theta + cot^{n}\\theta$(0\u00b0 &lt; \u03b8 &lt; 90\u00b0, n is an integer) is<\/p>\n<p>a)\u00a02<\/p>\n<p>b)\u00a02n+1<\/p>\n<p>c)\u00a02n<\/p>\n<p>d)\u00a00<\/p>\n<p><b>Question 5:\u00a0<\/b>If sin \u03b8 + cosec \u03b8 = 2 then the value of $sin^{5}\\theta+cosec^{5}\\theta$ is<\/p>\n<p>a)\u00a01\/2<\/p>\n<p>b)\u00a01<\/p>\n<p>c)\u00a00<\/p>\n<p>d)\u00a02<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/ssc-cgl-tier-2-mock-tests\" target=\"_blank\" class=\"btn btn-info \">Take SSC CGL Tier-2 Mock Tests<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/ssc-cgl-tier-2-previous-papers\" target=\"_blank\" class=\"btn btn-danger \">Download SSC CGL Tier-2 Previous Papers PDF<\/a><\/p>\n<p><b>Question 6:\u00a0<\/b>Find the value of $1 &#8211; 2 sin^{2} \u03b8 + sin^{4} \u03b8.$<\/p>\n<p>a)\u00a0$sin^{4} \u03b8$<\/p>\n<p>b)\u00a0$cos^{4} \u03b8$<\/p>\n<p>c)\u00a0$cosec^{4} \u03b8$<\/p>\n<p>d)\u00a0$sec^{4} \u03b8$<\/p>\n<p><b>Question 7:\u00a0<\/b>If sin (x + y) = cos [3(x + y)], then the value of tan[2(x + y)] is :<\/p>\n<p>a)\u00a0$\\sqrt{3}$<\/p>\n<p>b)\u00a01<\/p>\n<p>c)\u00a00<\/p>\n<p>d)\u00a0$\\frac{1}{\\sqrt{3}}$<\/p>\n<p><b>Question 8:\u00a0<\/b>The height of a tower is h and the angle of elevation of the top of the tower is a. On moving a distance h\/2 towards, the tower, the angle of elevation becomes 0. The value of cot\u03b1 &#8211; cot \u03b2 is<\/p>\n<p>a)\u00a01<\/p>\n<p>b)\u00a02<\/p>\n<p>c)\u00a01\/2<\/p>\n<p>d)\u00a02\/3<\/p>\n<p><b>Question 9:\u00a0<\/b>If A and B are positive acute angles such that sin (A \u2014 B) =1\/2 and cos (A+ B) = 1\/2 , then A and B are given by<\/p>\n<p>a)\u00a0A = 45\u00b0, B = 15\u00b0<\/p>\n<p>b)\u00a0A = 15\u00b0, B = 45\u00b0<\/p>\n<p>c)\u00a0A = 30\u00b0, B = 30\u00b0<\/p>\n<p>d)\u00a0None of these<\/p>\n<p><b>Question 10:\u00a0<\/b>If 2secA &#8211; (1 + sinA)\/cosA = x, then the value of x is<\/p>\n<p>a)\u00a0cosecA\/(1+sinA)<\/p>\n<p>b)\u00a0cosA\/(1+sinA)<\/p>\n<p>c)\u00a0cosA(1+sinA)<\/p>\n<p>d)\u00a0cosecA(1+sinA)<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/ssc-study-material\" target=\"_blank\" class=\"btn btn-info \">18000+ Questions &#8211; Free SSC Study Material<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/www.youtube.com\/channel\/UCMDJPaiDdRPv2mrEJoLfklA\" target=\"_blank\" class=\"btn btn-alone \">Free SSC Preparation (Videos Youtube)<\/a><\/p>\n<p><b>Question 11:\u00a0<\/b>If 1\/(cosecA \u00ad+ cotA) = x, then the value of x is<\/p>\n<p>a)\u00a0cosecA + cotA<\/p>\n<p>b)\u00a0cosecA \u00ad- cotA<\/p>\n<p>c)\u00a0$cosec^{2}$ A + cot2A<\/p>\n<p>d)\u00a0\u221a[$cosec^{2}$ A + cot2A]<\/p>\n<p><b>Question 12:\u00a0<\/b>cos3A is equal to<\/p>\n<p>a)\u00a0$cos^{3}A &#8211; 3sin^{2}cosA$<\/p>\n<p>b)\u00a0$cos^{3}A + 4sin^{2}cosA$<\/p>\n<p>c)\u00a0$cos^{3}A + 3sin^{2}cosA$<\/p>\n<p>d)\u00a0$cos^{3}A &#8211; 4sin^{2}cosA$<\/p>\n<p><b>Question 13:\u00a0<\/b>What is the value of tan $(-\\frac{5\\pi}{6})$<\/p>\n<p>a)\u00a0$-\\frac{1}{\\sqrt{3}}$<\/p>\n<p>b)\u00a0$\\frac{1}{\\sqrt{3}}$<\/p>\n<p>c)\u00a0${\\sqrt{3}}$<\/p>\n<p>d)\u00a0$-{\\sqrt{3}}$<\/p>\n<p><b>Question 14:\u00a0<\/b>If cos 135\u00b0 = x, then the value of x is<\/p>\n<p>a)\u00a0-1\/\u221a2<\/p>\n<p>b)\u00a0-\u221a3\/2<\/p>\n<p>c)\u00a0-1\/2<\/p>\n<p>d)\u00a02<\/p>\n<p><b>Question 15:\u00a0<\/b>2cos[(C+D)\/2].cos[(C-D)\/2] is equal to<\/p>\n<p>a)\u00a0cosC &#8211; cosD<\/p>\n<p>b)\u00a0sinC + sinD<\/p>\n<p>c)\u00a0cosC + cosD<\/p>\n<p>d)\u00a0sinC &#8211; sinD<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/blog\/general-science-questions-answers-competitive-exams-pdf-mcq-quiz\/\" target=\"_blank\" class=\"btn btn-primary \">Download SSC CGL General Science Notes PDF<\/a><\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Answers &amp; Solutions:<\/strong><\/span><\/p>\n<p><strong>1)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Expression : $sin A cos A (tan A &#8211; cot A)$<\/p>\n<p>= $sin A cos A (\\frac{sin A}{cos A} &#8211; \\frac{cos A}{sin A})$<\/p>\n<p>= $sin A cos A (\\frac{sin^2 A &#8211; cos^2 A}{sin A cos A})$<\/p>\n<p>= $sin^2 A &#8211; cos^2 A$<\/p>\n<p>= $sin^2 A &#8211; (1 &#8211; sin^2 A)$<\/p>\n<p>= $2sin^2 A &#8211; 1$<\/p>\n<p><strong>2)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Expression 1 : a cos \u03b8 + b sin \u03b8 = p<\/p>\n<p>Squaring both sides, we get :<\/p>\n<p>=&gt; $a^2 cos^2 \\theta + b^2 sin^2 \\theta + 2ab sin\\theta cos\\theta = p^2$ &#8212;&#8212;&#8211;Eqn(1)<\/p>\n<p>Expression 2 : a sin \u03b8 &#8211; b cos \u03b8 = q<\/p>\n<p><span class=\"redactor-invisible-space\">Squaring both sides, we get : <\/span><\/p>\n<p><span class=\"redactor-invisible-space\">=&gt; $a^2 sin^2 \\theta + b^2 cos^ \\theta &#8211; 2ab sin\\theta cos\\theta = q^2$ &#8212;&#8212;&#8212;-Eqn(2)<\/span><\/p>\n<p><span class=\"redactor-invisible-space\">Adding eqns (1) &amp; (2)<\/span><\/p>\n<p><span class=\"redactor-invisible-space\">=&gt; $a^2 (sin^2 \\theta+cos^2 \\theta) + b^2 (sin^2 \\theta + cos^2 \\theta) = p^2 + q^2$<\/span><\/p>\n<p style=\"margin-left: 20px;\"><span class=\"redactor-invisible-space\">=&gt; $a^{2} + b^{2} = p^{2}+ q^{2}$<\/span><\/p>\n<p><strong>3)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>tan<sup>2 <\/sup>\u03b8 &#8211; sec<sup>2<\/sup>\u03b8<\/p>\n<p>\u21d2 &#8211; (sec<sup>2<\/sup>\u03b8 &#8211; tan<sup>2 <\/sup>\u03b8)<\/p>\n<p>\u21d2 -1 because sec<sup>2<\/sup>\u03b8 &#8211; tan<sup>2 <\/sup>\u03b8 = 1<\/p>\n<p><strong>4)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Given tan \u03b8 + cot \u03b8 = 2<br \/>\nThen $ (tan \u03b8 + cot \u03b8)^2 = 4$<br \/>\n$ (tan ^2\u03b8 + cot ^2\u03b8 + 2tan \u03b8 cot \u03b8) = 4$<br \/>\n$ (tan ^2\u03b8 + cot ^2\u03b8 ) = 2$<span class=\"redactor-invisible-space\"><br \/>\nOption A is the correct answer.<\/span><span class=\"redactor-invisible-space\"><br \/>\n<\/span><\/p>\n<p><strong>5)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>Since $cosec\u03b8 = \\frac{1}{sin\u03b8}$<span class=\"redactor-invisible-space\"><br \/>\n<\/span>$sin \u03b8 + cosec \u03b8 = 2 $ becomes<br \/>\n$sin \u03b8 + \\frac{1}{sin\u03b8} =2$ <span class=\"redactor-invisible-space\"><br \/>\n$sin^2\u03b8 &#8211; 2sin\u03b8 +1 =0 $<span class=\"redactor-invisible-space\"> <span class=\"redactor-invisible-space\"><br \/>\nwhich is $(sin\u03b8 &#8211; 1)^2 = 0$<br \/>\n$sin \u03b8 =1$<br \/>\n$sin^{5}\\theta+cosec^{5}\\theta = 1 + 1 = 2$<br \/>\nHence Option D is th correct answer.<span class=\"redactor-invisible-space\"><br \/>\n<\/span><\/span><\/span><\/span><\/p>\n<p><strong>6)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Here,<\/p>\n<p>$1 &#8211; 2 sin^{2} \u03b8 + sin^{4} \u03b8.$ = $1^2 + (sin^2 \\theta)^2 &#8211; 2 \\times 1 \\times sin^2 \\theta$<\/p>\n<p>it is similar to $(a-b)^2$ = $a^2 + b^2 &#8211; 2ab$<\/p>\n<p>So,<\/p>\n<p>$1^2 + (sin^2 \\theta)^2 &#8211; 2 \\times 1 \\times sin^2 \\theta$<span class=\"redactor-invisible-space\"> = $(sin^2 \\theta &#8211; 1)^2$&#8230;&#8230;(1)<br \/>\n<\/span><\/p>\n<p><span class=\"redactor-invisible-space\">Now $sin^2 \\theta + cos^2 \\theta$ = 1&#8230;..(2)<\/span><\/p>\n<p><span class=\"redactor-invisible-space\">From equation 1 and 2 <\/span><\/p>\n<p><span class=\"redactor-invisible-space\">$(sin^2 \\theta &#8211; 1)^2$<span class=\"redactor-invisible-space\"> = $(sin^2 \\theta &#8211; sin^2 \\theta &#8211; cos^2 \\theta)^2$<br \/>\n<\/span><\/span><\/p>\n<p><span class=\"redactor-invisible-space\"><span class=\"redactor-invisible-space\"><span class=\"redactor-invisible-space\">= $(cos^2 \\theta)^2$<\/span><\/span><\/span><\/p>\n<p><span class=\"redactor-invisible-space\"><span class=\"redactor-invisible-space\"><span class=\"redactor-invisible-space\">= $cos^4 \\theta$<\/span><\/span><\/span><\/p>\n<p><span class=\"redactor-invisible-space\">\u00a0<\/span><\/p>\n<p><strong>7)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Given,<\/p>\n<p>sin (x + y) = cos [3(x + y)]<br \/>\nUsing: cos \u03b8 = sin (90\u00b0 &#8211; \u03b8)<br \/>\nsin (x + y) = sin [90\u00b0 &#8211; 3(x + y)]<br \/>\nsin [90\u00b0 &#8211; 3(x + y)] &#8211; sin (x + y) = 0<br \/>\n<span class=\"mtd\" style=\"background-color: initial;\"><span class=\"mrow\"><span class=\"mi\">sin<\/span><span class=\"mi\">C<\/span><span class=\"mo\">\u2212<\/span><span class=\"mi\">sin<\/span><span class=\"mi\">D <\/span><span class=\"mo\">=<\/span><span class=\"mn\">2<\/span><span class=\"mi\">sin[(<\/span><span class=\"mfrac\"><span class=\"texatom\"><span class=\"mrow\"><span class=\"mi\">C<\/span><span class=\"mo\">\u2212<\/span><span class=\"mi\">D)\/<\/span><\/span><\/span><span class=\"mn\">2] <\/span><\/span><span class=\"mi\">cos<\/span><span class=\"mfrac\"><span class=\"mn\"><span class=\"mi\">[(<\/span><span class=\"mfrac\"><span class=\"texatom\"><span class=\"mrow\"><span class=\"mi\">C+<\/span><span class=\"mi\">D)\/<\/span><\/span><\/span><span class=\"mn\">2]<\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mtd\" style=\"background-color: initial;\"><span class=\"mrow\"><span class=\"mn\"><br \/>\n=2sin$\\frac{(90-3(x+y)-(x+y))}{2} cos \\frac{90-3(x+y)+(x+y)}{2}$=0<\/span><\/span><\/span><span class=\"math\"><span class=\"mrow\"><span class=\"mtable\"><span class=\"mtd\"><span class=\"mrow\"><span class=\"mn\"><br \/>\n=2sin(45-2(x+y)) cos (45-(x+y))=0<\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n\u2234 sin 45\u00b0 &#8211; 2(x + y)} = 0<br \/>\n45\u00b0 &#8211; 2(x + y) = 0<br \/>\n2(x + y) = 45\u00b0<br \/>\nOR<br \/>\nCos{45\u00b0- (x + y)} = 0<br \/>\n45\u00b0- (x + y)} = 90\u00b0<br \/>\nx + y = &#8211; 45\u00b0<br \/>\n2(x + y) = &#8211; 90\u00b0<br \/>\nPutting 2(x + y) = 45\u00b0<br \/>\ntan 2(x + y) = tan 45\u00b0 = 1<br \/>\nAgain, Putting 2(x + y) = &#8211; 90\u00b0, we will not get any answer among given options<br \/>\nOption B is the correct answer.<\/p>\n<p><strong>8)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><img decoding=\"async\" class=\"img-responsive\" src=\"https:\/\/cracku.in\/media\/uploads\/3869.PNG\" \/><\/p>\n<p>Here, $\\angle$ACB = $\\alpha$ and $\\angle$ADB = $\\beta$<\/p>\n<p>AB = tower = $h$ metre<\/p>\n<p>and CD = $\\frac{h}{2}$ metre<\/p>\n<p>From $\\triangle$ABC<\/p>\n<p>=&gt; $tan \\alpha = \\frac{AB}{BC} = \\frac{h}{BC}$<\/p>\n<p>=&gt; $BC = h cot \\alpha$ &#8212;&#8212;&#8212;-Eqn(1)<\/p>\n<p>From $\\triangle$ABD<\/p>\n<p>=&gt; $tan \\beta = \\frac{AB}{BD} = \\frac{h}{BC &#8211; CD}$<\/p>\n<p>=&gt; $tan \\beta = \\frac{h}{h cot \\alpha &#8211; \\frac{h}{2}}$<\/p>\n<p>=&gt; $h cot \\alpha &#8211; \\frac{h}{2} = h cot \\beta$<\/p>\n<p>=&gt; $h (cot \\alpha &#8211; cot \\beta) = \\frac{h}{2}$<\/p>\n<p>=&gt; $cot \\alpha &#8211; cot \\beta = \\frac{1}{2}$<\/p>\n<p><strong>9)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>$sin (A &#8211; B) = \\frac{1}{2} = sin 30^{\\circ}$<\/p>\n<p>=&gt; $A &#8211; B = 30^{\\circ}$ &#8212;&#8212;&#8212;-Eqn(1)<\/p>\n<p>Again, $cos (A + B) = \\frac{1}{2} = cos 60^{\\circ}$<\/p>\n<p>=&gt; $A + B = 60^{\\circ}$ &#8212;&#8212;&#8212;Eqn(2)<\/p>\n<p>Adding eqns (1) &amp; (2)<\/p>\n<p>$2A = 90^{\\circ}$<\/p>\n<p>=&gt; $A = 45^{\\circ}$ and $B = 15^{\\circ}$<\/p>\n<p><strong>10)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Expression\u00a0:\u00a02secA &#8211; (1 + sinA)\/cosA = x<\/p>\n<p>= $\\frac{2}{sec A} &#8211; \\frac{(1 + sin A)}{cos A}$<\/p>\n<p>= $\\frac{2 &#8211; 1 &#8211; sin A}{cos A} = \\frac{1 &#8211; sin A}{cos A}$<\/p>\n<p>Multiplying both numerator and denominator by $(1 + sin A)$<\/p>\n<p>= $\\frac{1 &#8211; sin A}{cos A} \\times \\frac{(1 + sin A)}{(1 + sin A)}$<\/p>\n<p>= $\\frac{1 &#8211; sin^2 A}{cos A(1 + sin A)} = \\frac{cos^2 A}{cos A(1 + sin A)}$<\/p>\n<p>= $\\frac{cos A}{1 + sin A}$<\/p>\n<p>=&gt; Ans &#8211; (B)<\/p>\n<p><strong>11)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Expression\u00a0: $\\frac{1}{cosec A + cot A}$<\/p>\n<p>= $\\frac{1}{\\frac{1}{sin A} + \\frac{cos A}{sin A}}$<\/p>\n<p>= $\\frac{1}{\\frac{1 + cos A}{sin A}} = \\frac{sin A}{1 + cos A}$<\/p>\n<p>Multiplying both numerator and denominator by $(1 &#8211; cos A)$<\/p>\n<p>= $\\frac{sin A}{1 + cos A} \\times \\frac{(1 &#8211; cos A)}{(1 &#8211; cos A)}$<\/p>\n<p>= $\\frac{sin A(1 &#8211; cos A)}{1 &#8211; cos^2 A} = \\frac{sin A(1 &#8211; cos A)}{sin^2 A}$<\/p>\n<p>= $\\frac{1 &#8211; cos A}{sin A} = \\frac{1}{sin A} &#8211; \\frac{cos A}{sin A}$<\/p>\n<p>= $cosec A &#8211; cot A$<\/p>\n<p>=&gt; Ans &#8211; (B)<\/p>\n<p><strong>12)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Using triple angle formula, we know that\u00a0: $cos(3A) = 4cos^3A &#8211; 3cosA$<\/p>\n<p>= $cos^3A + (3cos^3A &#8211; 3cosA)$<\/p>\n<p>= $cos^3A + 3cosA(cos^2A &#8211; 1)$<\/p>\n<p>= $cos^3A &#8211; 3cosA(1 &#8211; cos^2A)$<\/p>\n<p>= $cos^3A &#8211; 3sin^2AcosA$<\/p>\n<p>=&gt; Ans &#8211; (A)<\/p>\n<p><strong>13)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Expression\u00a0:\u00a0tan $(-\\frac{5\\pi}{6})$<\/p>\n<p>= $- tan(\\frac{5 \\pi}{6})$<\/p>\n<p>= $-tan (\\pi &#8211; \\frac{\\pi}{6}) = -(-tan \\frac{\\pi}{6})$<\/p>\n<p>= $tan(\\frac{\\pi}{6}) = \\frac{1}{\\sqrt{3}}$<\/p>\n<p>=&gt; Ans &#8211; (B)<\/p>\n<p><strong>14)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Expression\u00a0: cos 135\u00b0 = x<\/p>\n<p>= $cos (180 &#8211; 45) = -cos (45$\u00b0$)$<\/p>\n<p>= $\\frac{-1}{\\sqrt{2}}$<\/p>\n<p>=&gt; Ans &#8211; (A)<\/p>\n<p><strong>15)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Expression\u00a0:\u00a02cos[(C+D)\/2]cos[(C-D)\/2]<\/p>\n<p>Using the formula\u00a0: $cos x . cos y = \\frac{1}{2} [cos (x + y) + cos (x &#8211; y)]$ &#8212;&#8212;&#8212;&#8212;&#8211;(i)<\/p>\n<p>Substituting $(x + y) = C$ and $(x &#8211; y) = D$<\/p>\n<p>=&gt; $x = \\frac{C + D}{2}$ and $y = \\frac{C &#8211; D}{2}$ in equation (i),<\/p>\n<p>=&gt; $cos (\\frac{C + D}{2}) . cos (\\frac{C &#8211; D}{2}) = \\frac{1}{2} [cos C + cos D]$<\/p>\n<p>=&gt; $2 . cos (\\frac{C + D}{2}) . cos (\\frac{C &#8211; D}{2}) = cos C + cos D$<\/p>\n<p>=&gt; Ans &#8211; (C)<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/ssc-online-coaching\" target=\"_blank\" class=\"btn btn-info \">Free SSC Online Coaching<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.cracku.app&amp;hl=en_US\" target=\"_blank\" class=\"btn btn-danger \">DOWNLOAD APP FOR SSC FREE MOCKS<\/a><\/p>\n<p>We hope this Trogonometry Questions pdf for SSC CGL Tier 2 exam will be highly useful for your Preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trigonometry Questions for SSC CGL Tier 2 PDF Download SSC CGL Tier 2 Trigonometry Questions PDF. Top 15 SSC CGL Tier 2 Trigonometry questions based on asked questions in previous exam papers very important for the SSC exam. Take SSC CGL Tier-2 Mock Tests Download SSC CGL Tier-2 Previous Papers PDF Question 1:\u00a0If 0\u00b0 \u2264 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