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Rajan@2021
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Asked: 2021-04-09T23:30:47+05:30 In:

Prove that: (1-tan²θ)/1+tan²θ) = cos²θ-sin²θ

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

(1-tan²θ)/1+tan²θ) = cos²θ-sin²θ

RS Aggarwal, class 10, chapter 13A, question no 18(i)

cbse class 10rs aggarwaltrigonometric identities
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