For the following questions answer them individually
Which one of the following is true for 0° < θ< 90° ?
If x ($$\sin$$ 60) $$\tan^{2}$$ 30° - $$\tan$$ 45° = cosec 60° $$\cot$$ 30° - $$\sec^{2}$$ 45°, then x =
If $$\frac{5x}{2x^2+5x+1}=\frac{1}{3}$$ then the value of $$(x+\frac{1}{2x})$$ is
If $$x^{3}+\frac{3}{x}=4(a^{3}+b^{3})$$ and $$3x+\frac{1}{x^3}=4(a^{3}-b^{3})$$, then $$a^{2}-b^{2}$$ is equal to
If x= 6 + 1 , then the value of $$x^{4}+\frac{1}{x^4}$$
If AD is the median of the triangle ABC and G be the centroid, then the ratio of AG : AD is
In $$\triangle$$PQR, $$\angle$$RPQ = 90° PR=6CM and PQ=8CM then the radius of the circumcircle of $$\triangle$$PQR is
Two supplementary angles are in the ratio 2 : 3. The angles are
In a triangle ABC, median is AD and centroid is O. AO = 10 cm. The length of OD (in cm) is
ΔBCD is parallelogram. P and Q are the mid-points of sides BC and CD respectively. If the area of .6, ABC is 12 cm , then the area of ΔAPQ is
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