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  4. If sin θ+ operatornamecosec θ=2, then the value of sin 8 θ+ operatornamecosec8 θ is equal to -

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Q. If $\sin \theta+\operatorname{cosec} \theta=2$, then the value of $\sin ^8 \theta+\operatorname{cosec}^8 \theta$ is equal to -

Trigonometric Functions

Solution:

Correct answer is (a) 2