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Rajan@2021
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Prove that: (cos³θ+sin³θ)/(cosθ+sinθ) + (cos³θ-sin³θ)/(cosθ-sinθ) = 2

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This question is from trigonometry topic –  trigonometric identities in which we have to prove that

(cos³θ+sin³θ)/(cosθ+sinθ) + (cos³θ-sin³θ)/(cosθ-sinθ) = 2

RS Aggarwal, Class 10, Chapter 13A,  question no 22

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