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Question

Prove that1sinθ1+sinθ=secθtanθ


Solution

1sinθ1+sinθ=1sinθ1+sinθ×1sinθ1sinθ

[Multiplying and dividing by 1sinθ]

(1sinθ)2cos2θ=1sinθcosθ
=1cosθtanθ=secθtanθ
 

NCERT Previous Years Papers

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