JEE Math Practice Question
If the $$\int {{{5\tan x} \over {\tan x - 2}}dx = x + a\,\ln \,\left| {\sin x - 2\cos x} \right| + k,} $$ then $$a$$ is equal to :
- A.$$-1$$
- B.$$-2$$
- C.$$1$$
- D.$$2$$
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