- #1

Markjdb

- 31

- 0

## Homework Statement

Find the integral from 0 to pi/2 of sin(x)dx/(cos(x)+sin(x)).

## The Attempt at a Solution

You can easily make it into the integral of tan(x)dx/(1+tan(x)), but the substitution u=tanx can't work because tan(pi/2) is undefined. Any ideas for a good substitution?