If\[x=a(\cos \theta +\theta \sin \theta )\], \[y=a(\sin \theta -\theta \cos \theta ),\text{ }\]then \[\frac{dy}{dx}=\] [DCE 1999]

If\[x=a(\cos \theta +\theta \sin \theta )\], \[y=a(\sin \theta -\theta

1.	If\[x=a(\cos \theta +\theta \sin \theta )\], \[y=a(\sin \theta -\theta \cos \theta ),\text{ }\]then \[\frac{dy}{dx}=\] [DCE 1999]
A.	\[\cos \theta \]
B.	\[\tan \theta \]
C.	\[\sec \theta \]
D.	cosecq
Answer» C. \[\sec \theta \]

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If\[x=a(\cos \theta +\theta \sin \theta )\], \[y=a(\sin \theta -\theta \cos \theta ),\text{ }\]then \[\frac{dy}{dx}=\] [DCE 1999]

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