If \cot \theta (1 + \sin \theta) = 4m and \cot \theta(1- \sin \theta) = 4n, then which one of the following is correct ? [2018 CDS-II]

Correct Answer is : (m2−n2)2 = mn

UPSC CDS Math Trigonometric Ratios and Trigonometric Identities Questions

Question : 21 of 107

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If cot‌θ(1+sinθ)=4m and cot‌θ(1−sin‌θ)=4n, then which one of the following is correct ?

[2018 CDS-II]

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