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int (0) ^(pi//2) sqrt(1-cos x )" "dx=...

`int _(0) ^(pi//2) sqrt(1-cos x )" "dx=`

A

`sqrt^(2)-2`

B

`sqrt(2) +2`

C

`2sqrt(2)-2`

D

`2sqrt(2) +2`

Text Solution

Verified by Experts

The correct Answer is:
C
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