If \sec(\theta-\alpha),\sec\theta and \sec(\theta+\alpha) are in AP where \cos\alpha\neq 1, then what is the value of \sin^2\theta+\cos\alpha ? [NDA II 2018]

NDA Math Trigonometric Ratios of Angles and Equations

Question : 18 of 100

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If sec(θ−α),sec‌θ and sec(θ+α) are in AP where cosα≠1, then what is the value of sin2θ+cosα ?

[NDA II 2018]

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