UPSC CDS Math Trigonometric Ratios and Trigonometric Identities Questions

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Question : 63 of 107

Marks: +1, -0

If x=a‌cos‌θ and y=b‌cot‌θ , then (ax−1−by−1)(ax−1+by−1) is equal to

[2015 CDS-II]

0
1
tan2θ
sin2θ

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