\( \int \frac{\sec ^{2} x-7}{\sin ^{7} x} d x= \)
(A) \( \frac{\tan x}{(\sin x)^{7}}+C \)
(B) \(...
\( \int \frac{\sec ^{2} x-7}{\sin ^{7} x} d x= \)
(A) \( \frac{\tan x}{(\sin x)^{7}}+C \)
(B) \( \frac{\cos x}{\sin ^{7} x}+C \)
(C) \( \frac{\sin x}{\cos ^{7} x}+C \)
(D) None of these
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