What is \[\int{\sin x\log (\tan x)dx}\] equal to?

1.	What is \[\int{\sin x\log (\tan x)dx}\] equal to?
A.	\[\cos x\log \tan x+\log \,\,\tan (x/2)+c\]
B.	\[-\cos x\log \tan x+\log \,\,\tan (x/2)+c\]
C.	\[\cos x\log \tan x+\log \,\,\cot \,(x/2)+c\]
D.	\[-\cos x\log \tan x+\log \,\,\cot \,(x/2)+c\]
Answer» B. \[-\cos x\log \tan x+\log \,\,\tan (x/2)+c\]

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What is \[\int{\sin x\log (\tan x)dx}\] equal to?

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