If PQ and PR be the two tangents to a circle with centre O such that ∠QPR = 120° then ∠POQ is
1). 90°
2). 45°
3). 30°
4). 60°
1. For any real values of $\theta$, $\sqrt{\frac{sec\theta -1}{sec\theta +1}}$ =
2. Find the value of cot x - tan x
3. \(\sqrt {\frac{{1 + {\rm{sin\theta }}}}{{1 - {\rm{sin\theta }}}}} \) is equal to?
4. The value of $tan1^{0} tan2^{0} tan3^{0} .......... tan89^{0}$ is :
5. If x2 = sin230° + 4cot245° - sec260°, then the value of x (x > 0) is
8. What is the value of tan 6° tan 36° tan 84° tan 54° tan 45°?
9. If in a triangle ABC, Sin A = Cos B then the value of Cos C is
10. If $sin\theta - cos\theta$ = $\frac{1}{2}$ then value of $sin\theta + cos\theta$ is: