Prove that the following identities : cosθ/1+sinθ=1-sinθ/cosθ
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Step-by-step explanation:
cosθ/1+sinθ
=cosθ(1-sinθ)/(1+sinθ)(1-sinθ)
=cosθ(1-sinθ)/(1-sin²θ)
=cosθ(1-sinθ)/cos²θ
=(1-sinθ)/cosθ
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