asin [function]

asin( x )

returns the arcsine of x (angle in radians), as real

• If x is outside the [-1,1] range, function returns null and emits a warning message

asin( -1 ); // real (-1.5708)
asin( 0 ); // real (0)
asin( 2 ); // null; Warning: asin(): mathematical error