Prove the following trigonometric identities-if cos A -cos 2 A -1- prove that sin 2 A -sin 4 A -1

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Trigonometric Ratios of Multiples of an Angle

Prove the fol...

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Prove the following trigonometric identities.

if cos A + cos²A = 1, prove that sin² A + sin⁴ A = 1

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Prove the following trigonometric identities:

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If cos A + cos² A = 1, then sin² A + sin⁴ A is

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