\( \int(1+2 \tan x(\tan x+\sec x)]^{1 / 2} d x \) is equal
(A) \( \log \sec x(\sec x-\tan x)+C \...
\( \int(1+2 \tan x(\tan x+\sec x)]^{1 / 2} d x \) is equal
(A) \( \log \sec x(\sec x-\tan x)+C \)
(B) \( \log \operatorname{cosec}(\sec x+\tan x)+C \)
(C) \( \log \sec x(\sec x+\tan x)+C \)
(D) \( \log (\sec x+\tan x)+C \)
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