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Question

Prove the identity: sec2 θ+cosec2 θ=sec θ cosec θ [4 MARKS]

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Solution

Formula: 2 Marks
Proof: 2 Marks
LHS=sec2 θ+cosec2 θ=1cos2 θ+1sin2 θ=sin2 θ+cos2 θcos2 θ sin2 θ=1cos2 θ sin2 θ=sec2 θ cosec2 θ=sec θ cosec θ=RHS


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