Math, asked by vedantpadave10, 8 months ago

what is the value of cos2A

Answers

Answered by sunyanajadhav5

1

Step-by-step explanation:

cos 2A = 2 (1 - sin2 A) - 1, [since we know that cos2 θ = 1 - sin2 θ] ⇒ cos 2A = 2 - 2 sin2 A - 1.

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