KcetDifferentiationKCET 2018MCQ+1 / -02018If $\cos y=x \cos (a+y)$ with $\cos a \neq \pm 1$, then $\frac{d y}{d x}$ is equal toA$\frac{\sin a}{\cos ^2(a+y)}$B$\frac{\cos ^2(a+y)}{\sin a}$C$\frac{\cos a}{\sin ^2(a+y)}$D$\frac{\cos ^2(a+y)}{\cos a}$Check AnswerClear SelectionReveal AnswerShow Explanation
