181 ASN arc-sine Purpose To calculate an angle whose sine is known. The calculated angle is in radians but may be converted to degrees by using the function DEG . A radian is equal to about 57 degrees. Mathematicians often prefer to work in radians. Examples 340 J=ASN(0.3456) 30 angle=DEG(ASN(.7654)) PRINT ASN(.5) Description A function giving the arc-sine of its argument. The result is in radian measure. Syntax = ASN ( ) Associated keywords ACS , ATN , SIN , COS , TAN , RAD , DEG