1.

Evaluate the following integrals int_(pi/4)^(pi/2)cotxdx

Answer»

SOLUTION :`int_(pi/4)^(pi/2)cotxdx=[In SINX]_(pi/4)^(pi/2)`
`Insin(pi/2)-In SIN(pi/4)=Insqrt2=(1/2)IN2`


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