$\frac{2 \tan (45^\circ + x)}{1 + \tan^2 (45^\circ + x)} = কত?$ $\cos 2x$ $\sin 2x$ $\cot 2x$ $\tan 2x$

ID#6915 HSC Higher Math 1st MCQ (Jessore 2023)

$\frac{2 \tan (45^\circ + x)}{1 + \tan^2 (45^\circ + x)} = কত?$

ক) $\cos 2x$

খ) $\sin 2x$

গ) $\cot 2x$

ঘ) $\tan 2x$

খ

একটানা সকল প্রশ্নের সমাধান পড়ুন

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