関連ワード:  what is the integral of sin^2x    what is the integral of sin^2    what is the integral of sin^2 theta    what is the integral of sin^2(theta)    what is the integral of sin^2(2x)    what is the integral of sin 2x    what is the integral of sin 2    what is the integral of sin 2 theta    what is the integral of sin 2x dx    what is the integral of sin 2t