If \(\rm f(x)=\tan^{-1} \left[\dfrac{\sin x}{1 + \cos x}\right]\), th – McqOptions

MCQOPTIONS

1.	If \(\rm f(x)=\tan^{-1} \left[\dfrac{\sin x}{1 + \cos x}\right]\), then what is the first derivative of f(x)?
A.	1/2
B.	-1/2
C.	2
D.	-2
Answer» B. -1/2

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