Practice Introduction of Trigonometry - Dormant Offered by Unacademy

Introduction of Trigonometry

Evaluate $\left(1-\cos ^{2} \theta\right)\left(\cos e c^{2} \theta-1\right)$ by using the trigonometric identities.

$\sin ^{2} \theta$

$\cos ^{2} \theta$

$\cos \theta$

$\cot ^{2} \theta$