1
IIT-JEE 1999
MCQ (Single Correct Answer)
+2
-0.5
$$\int\limits_{\pi /4}^{3\pi /4} {{{dx} \over {1 + \cos x}}} $$ is equal to
A
$$2$$
B
$$-2$$
C
$$1/2$$
D
$$-1/2$$

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