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Question

Solve:
sinθ.sec(90oθ)cos(90oθ)csc(90oθ).cos(90oθ).tan(90oθ)tan(90oθ)cotθ=0

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Solution

sinθsec(90°θ)cos(90°θ)csc(90°θ)cos(90°θ)tan(90°θ)cotθcotθ

=sinθcscθcotθtanθ1

=11
=0.
Hence, the answer is 0.



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