Integration 0 to pi by 2 sin square x dx

- Evaluate integration 0 to pi by 2 sin square x dx
- Integration 0 to pi by 2 sin x by 1 cos square x dx
- Integration 0 to pi by 2 sin square x by sin x cos x dx
- Integration 0 to pi by 2 sin square x by 2 minus cos square x by 2 dx
- Integration of 0 to pi by 2 cos square x dx by cos square x 4 sin square x
- Integration of sinx^2