If sin@ is the geometric mean of sin x and cos x then cos 2@ equals to

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Arun · Answer

dear student sin^2 @ = sin x *cos x 1 – 2 sin^2 @ = 1 – 2 sin x* cos x cos 2@ = 1 – sin 2x hope it helps Regards Arun (askIITians forum expert)

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If sin@ is the geometric mean of sin x and cos x then cos 2@ equals to

If sin@ is the geometric mean of sin x and cos x then cos 2@ equals to

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If sin@ is the geometric mean of sin x and cos x then cos 2@ equals to

If sin@ is the geometric mean of sin x and cos x then cos 2@ equals to

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