Question

cos^2(15)º-cos^2(75)º =​

Answer 1

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Answer 2

here is ur ans

cos^2 15 + cos^2 75

=> cos^2 (90-75) + cos^2 75

=> sin^2 75 + cos^2 75

sin^2 A + cos^2 A = 1

=>so the ans of

sin^2 75 + cos^2 75 = 1 (bec the angle is same with cos^2 nd sin^2)

Hope it help u

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