JEE MAIN - Mathematics Hindi (2017 (Offline) - No. 16)

समाकल $$\int\limits_{\frac{\pi}{4}}^{\frac{3 \pi}{4}} \frac{\mathrm{d} x}{1+\cos x}$$ बराबर है :

$$2$$

$$4$$

$$-1$$

$$-2$$

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