## Whimsical Group Title how do you integrate (sin(x))^2 without using the trigo identity cos(2x)=1-2(sin(x))^2 2 years ago 2 years ago

1. Aamal Group Title

can we there use anyother trigo identity

2. Whimsical Group Title

erm... u cant use any trigo identity or integrating it by parts

3. Aamal Group Title

yeah integraion by parts give our result

4. brinethery Group Title

Maybe U-substitution for this one?

5. Whimsical Group Title

is it impossible to integrate this without using trigo identity or intergration by parts? can we use chain rule and integrate it into $-1/3\cos^3(x)$

6. brinethery Group Title
7. Whimsical Group Title

ok i understand now thankyou

8. brinethery Group Title

You can also use the good ol' table of integrals but I'm sure your teacher doesn't want that. http://integral-table.com/integral-table.html#SECTION00007000000000000000