If and ,…

MATHEMATICS · Single correct · CBSE · Mathematics · Continuity and Differentiability · Continuity and Differentiability

Problem

If x=a(cos⁡t+log⁡tan⁡t2)x=a\left(\cos t+\log\tan\frac{t}{2}\right) and y=asin⁡ty=a\sin t, then dydx=\frac{dy}{dx}= (a) tan⁡t\tan t (b) −tan⁡t-\tan t (c) cot⁡t\cot t (d) −cot⁡t-\cot t

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