JEE Math Practice Question
The integral $$\int_{{\pi \over {12}}}^{{\pi \over 4}} {\,\,{{8\cos 2x} \over {{{\left( {\tan x + \cot x} \right)}^3}}}} \,dx$$ equals :
- A.$${{15} \over {128}}$$
- B.$${{15} \over {64}}$$
- C.$${{13} \over {32}}$$
- D.$${{13} \over {256}}$$
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