NCERT Trigonometry Class 10 Exercise 8.4 Solutions
Trigonometric identities are very important during solving Questions. Here are the following identities which are used to solve or prove the questions. I. sin2 θ + sin2 θ = 1 (a) sin2θ = 1 – cos2 θ (b) cos2θ = 1 – sin2θ II. 1 + tan2θ = sec2θ (a) tan2θ = sec2θ – 1…