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The value of int(pi//4)^(3pi//4)(phi)/(1...

The value of `int_(pi//4)^(3pi//4)(phi)/(1+sinphi)d phi` is

A

`sqrt2 -1`

B

`(1)/(sqrt2 -1)`

C

`(pi)/( sqrt2+1)`

D

`(pi)/(sqrt2-1)`

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The correct Answer is:
A
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DISHA PUBLICATION-INTEGRALS -EXERCISE-1 CONCEPT BUILDER
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  10. If I(n) = int (0)^(pi//4) tan^(n) theta " " d theta, "then "I(8)+I(6)=

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  14. If int0^ooe^(-ax)dx=1/a, then int0^oo(x^n)e^(-ax)dx is

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