Same chapter3 marksDifficulty: Medium
Prove that (1 − cos2θ) cosec2θ = 1.
Trigonometric Identities
3 marksDifficulty: Medium
Prove that (1 − cos2θ)(1 + cot2θ) = 1.
Original Khojo Papers practice question — not from a past board paper.
Answer
Proved.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
1 − cos2θ = sin2θ and 1 + cot2θ = cosec2θ. Their product is sin2θ × (1/sin2θ) = 1.
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