For the parametric equations and

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

Problem

For the parametric equations x=sin⁡tx=\sin t and y=cos⁡ty=\cos t, which of the following equals d2ydx2\dfrac{d^{2}y}{dx^{2}} expressed in terms of tt? (a) −1cos⁡t-\dfrac{1}{\cos t} (b) sec⁡3t\sec^{3} t (c) −sec⁡3t-\sec^{3} t (d) −csc⁡3t-\csc^{3} t

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