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Mathematics
tan [2 tan-1 ( cos x)] =
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Q. $\tan [2 \tan^{-1} (\cos x)] = $
Inverse Trigonometric Functions
A
2tanx cosx
11%
B
2tanx cosecx
54%
C
2cotx cosecx
24%
D
2secx
11%
Solution:
Correct answer is (b) 2tanx cosecx