यदि ^ -1 [( )^ 1 / 2 ]- ^ -1 [( )^ 1 / 2 ]=x तब x= - Vidyadip

MCQ

यदि $\cot ^{-1}\left[(\cos \alpha)^{1 / 2}\right]-\tan ^{-1}\left[(\cot \alpha)^{1 / 2}\right]=x$ तब $\sin x=$

✓
$\tan ^2 \frac{\alpha}{2}$
B
$\cot ^2 \frac{\alpha}{2}$
C
$\tan \alpha$
D
$\cot \frac{\alpha}{2}$

✓

Answer

Correct option: A.

$\tan ^2 \frac{\alpha}{2}$

(A)

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