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int0^(pi) [cot x] dx, when [cdot] denote...

`int_0^(pi) [cot x] dx`, when `[cdot]` denotes the greatest integer function, is equal to :

A

`pi/2`

B

1

C

minus 1

D

`pi/2`

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The correct Answer is:
D
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HIMALAYA PUBLICATION-Definite Integrals and its Application-QUESTION BANK
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