NCERT Exercise 8.3 - Q4(i) - Introduction to Trigonometry
Question: Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (i) (cosec θ — cot θ)^2 = (1 — cos θ)/(1 + cos θ)
Answer: (cosec θ — cot θ)^2 = (1 — cos θ)/(1 + cos θ).
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