Mathematics

Mathematics

Problem

If x=a(cos⁡θ+θsin⁡θ)x = a(\cos \theta + \theta \sin \theta) , y=a(sin⁡θ−θcos⁡θ)y = a(\sin \theta - \theta \cos \theta) , then dydx=\frac{dy}{dx} = (a) cos⁡θ\cos \theta (b) tan⁡θ\tan \theta (c) sec⁡θ\sec \theta (d) cosec⁡θ\operatorname{cosec} \theta

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