sin77Sin Sin 77 Live at The Casbah 04242004. Sin Sin 77 • Album. 10 videosLast updated on Feb 13, 2025.Calculate the value of the sin of 720 ° To enter an angle in radians, enter sin(720RAD) sin(720 °) = -4.89842541528951E-16 Sine, in mathematics, is a tronometric function of an angle.