If cos6 -sin6 -K sin2 2-1- then K-

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Trigonometric Ratios of Compound Angles

If cos6 α+sin...

Question

If $c o s^{6} α + s i n^{6} α + K s i n^{2} 2 α = 1,$ then K=

\frac{4}{3}

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\frac{3}{4}

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\frac{1}{2}

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2

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