Question

tan2 θ cos2 θ is (a) 1 − cos2 θ (b) cos2 θ (c) √(1 – cos2 θ) (d) 1

Answer 1

(tan^2 theta)(cos^2theta) is...?

(sin^2theta /cos^2theta )(cos^2theta)

{both cos theta will cancel}

sin^2theta

1-cos^2theta

(by applying the formula sin^2theta=1-cos^2theta)

option c is correct

hope you understand