RRB Group-D Trigonometry Questions PDF
Download Top 20 RRB Group-D Trigonometry Questions and Answers PDF. RRB Group-D Maths questions based on asked questions in previous exam papers very important for the Railway Group-D exam.
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Question 1:
a)
b)
c)
d)
Question 2: The least value of
a) 1
b) 19
c) 25
d) 7
Question 3: If
a) 0
b) 1
c) 2
d) 3
Question 4: If
a) 1
b) 2
c) 3
d) 4
Question 5: If
a) 0
b) 1
c) -1
d) 2
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Question 6: The value of
a)
b)
c)
d)
Question 7: If
a) -
b) -
c)
d)
Question 8: If
a) 0
b)
c)
d)
Question 9: If
a)
b)
c)
d)
Question 10: The value of
a) 1
b) 2
c)
d)
RRB Group D previous year papers
Question 11: Maximum value of
a) 2
b)
c)
d) 1
Question 12: If
a) 2
b) 3
c) 1018
d) 2017
Question 13: If
a) 0
b) -1
c) 1
d) 2
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Question 14: If
a) 3
b) 2
c)
d)
Question 15: If
a)
b)
c)
d)
Question 16: If x is an acute angle such that
Tan (4x – 50°) = Cot ( 50° – x), then the value of x would be?
a) 60
b) 45
c) 50
d) 30
RRB Group-D Important Questions (download PDF)
Question 17: If cosec 9x= sec 9x (0 <x<10), what is the value of x?
a) 9°
b) 3°
c) 5°
d) 6°
Question 18: If
a) 0
b) -1
c) 1
d) 2
Question 19: If
a) 45º
b) 90º
c) 180º
d) More than one value is possible
Question 20: If
a) 1/6
b) 13/27
c) 1/18
d) None of these
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Answers & Solutions:
1) Answer (A)
Taking
hence eq will be
As it is given that
after putting values and solving we will get the equation reduced to 1/7.
2) Answer (A)
or
or
or
or
or now above expression to be minimum, equation
So applying
or
After putting above value in eq.(1) , we will get least value of expression as 25.
3) Answer (B)
Similarly
Now putting above values in given equation, and after solving it will be reduced to 1
4) Answer (A)
Hence value of
or
5) Answer (A)
Given equation can be written as
as
or
putting above value in given equation it will be
6) Answer (A)
or
7) Answer (C)
So,
Hence,
So,
8) Answer (B)
9) Answer (A)
So,
Hence,
So,
10) Answer (A)
So, the given fraction becomes,
11) Answer (B)
Hence, Correct option is B.
12) Answer (A)
==>
==>
==>
==>
==>
Therefore, irrespective of the power, the expression always equals to 2.
13) Answer (A)
=>
=>
=>
=>
The given expression would be,
14) Answer (A)
=>
=>
=> cosec x = 1/sin x = 2 and sin (60+x) = sin 90 = 1
=> The value of the expression is 2+1 = 3
15) Answer (B)
Given that ,
Using the given property in
Hence , the correct option is B
16) Answer (D)
We know that Tan ( 90 – x) = Cot x and Cot (90 – x) = Tanx
So 4x – 50 = 90 – y
Then 50 – x will be y
=> y = 50 – x
x + y = 50
Moreover,
90 – y = 4x – 50
=> 4x + y = 140
Subtracting the two equations, we get
3x = 90
=> x = 30
Hence the correct answer is option D.
17) Answer (C)
If cosec 9x= sec 9x,
Then
In the first quadrant cos and sin are equal when
Hence, x = 5°
18) Answer (C)
=>
=>
As
=>
=>
The given expression would be,
19) Answer (B)
We know that
=>
=> cos x =0 or cos x =2
Now, cos x =2 is not possible.
=> cos x = 0
In the range,
Thus, B is the correct answer.
20) Answer (D)
==>
==>
==>
==>
Since there is no such option, the correct option to choose is D.
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