The solution of the differential equation \[(1+\cos x)dy=(1-\cos x)dx\

1.	The solution of the differential equation \[(1+\cos x)dy=(1-\cos x)dx\]is
A.	\[y=2\tan \frac{x}{2}-x+c\]
B.	\[y=2\tan x+x+c\]
C.	\[y=2\tan \frac{x}{2}+x+c\]
D.	\[y=x-2\tan \frac{x}{2}+c\]
Answer» B. \[y=2\tan x+x+c\]

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The solution of the differential equation \[(1+\cos x)dy=(1-\cos x)dx\]is

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