Question

If cos A + cos² A = 1 then (sin² A + sin⁴ A) = ?

विकल्प

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Answer 1

1

Explanation:

cos A + cos² A = 1

⇒ cos A = (1 – cos² A) = sin² А

∴ (sin² A + sin⁴ A) = (cos A + cos² A) = 1