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ID#7048 HSC Higher Math 1st MCQ (Dinajpur 2023)

$\frac{1 - \tan^2 \left(\frac{\pi}{4} + x\right)}{1 + \tan^2 \left(\frac{\pi}{4} + x\right)}$ এর মান কত?
ক) (ক) $\sin 2x$
খ) (খ) $-\cos 2x$
গ) (গ) $-\sin 2x$
ঘ) (ঘ) $\cos 2x$
Resource Details
Exam HSC
Subject Higher Math 1st paper
Chapter 7
Board Dinajpur
Year 2023

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