sins88Sin 88 Degrees. The value of sin 88 degrees is 0.9993908. . ..Sin 88 degrees in radians is written as sin (88° × π180°), i.e., sin (22π45) or sin (1.535889. . .). In this article, we will discuss the methods to find the value of sin 88 degrees withUse our sin(x) calculator to find the sine of 88 degrees - sin(88 °) - or the sine of any angle in degrees and in radians.