Solve by substituting and again by substituting

MATHEMATICS · Subjective · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

Solve cot⁡θ=sin⁡2θ\cot\theta=\sin2\theta by substituting sin⁡2θ=2tan⁡θ1+tan⁡2θ\sin2\theta=\frac{2\tan\theta}{1+\tan^2\theta} and again by substituting sin⁡2θ=2sin⁡θcos⁡θ\sin2\theta=2\sin\theta\cos\theta. Check whether the two answers are the same.

Related theory

Browse the problem library