AP EAPCET 16th May 2023 Shift 1 Solved Paper

Section: Mathematics

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Question : 21 of 160

Marks: +1, -0

If cos(θ−α),cos‌θ and cos(θ+α) are in harmonic progression, then 2tan2θ=

tan2‌
α
2
−1
1+tan2‌
α
2
1+cot2‌
α
2
1−cot2‌
α
2

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