NCERT Exercise 8.3 - Q4(vii) - Introduction to Trigonometry
Question: Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (vii) (sin θ — 2 sin^3 θ)/(2 cos^3 θ — cos θ) = tan θ
Answer: (sin θ — 2 sin^3 θ)/(2 cos^3 θ — cos θ) = tan θ.
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