sin77Use our sin(x) calculator to find the sine of 77 degrees - sin(77 °) - or the sine of any angle in degrees and in radians.Note that sin77° is periodic: sin (77° + n × 360°) = sin 77 degrees, n$hspace{5px} in hspace{5px} mathbb{Z}$. There are more formulas for the double angle (2 × 77°), half