JEE Advance - Mathematics (1999 - No. 13) | ExamPlay

JEE Advance - Mathematics (1999 - No. 13)

$$\int\limits_{\pi /4}^{3\pi /4} {{{dx} \over {1 + \cos x}}} $$ is equal to

$$2$$

$$-2$$

$$1/2$$

$$-1/2$$

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