116
Which of the following is a trigonometric identity ?
- (a)$\sin^2 \theta = 1 + \cos^2 \theta$
- (b)$\csc^2 \theta + \cot^2 \theta = 1$
- (c)$\sec^2 \theta = 1 + \tan^2 \theta$
- (d)$\sin 2\theta = 2 \sin \theta$
Show SolutionHide Solution↓
(c) $\sec^2 \theta = 1 + \tan^2 \theta$