asin - luxembourg/muxcode-clm GitHub Wiki
ASIN()
FUNCTION: asin(<number>[, <units>])
Returns the arcsine of <number>. The value returned will be expressed in <units>. <units> may be 'radians', 'degrees', or 'gradians' or just the first letter of any of these. By default, <units> is 'radians'.
In a circle, there are 2*pi() radians, 360 degrees, and 400 gradians.
Examples: > say asin(0) You say, "0" > say asin(1) You say, "1.5707963267948966" > say asin(fdiv(sqrt(2),2),d) You say, "45" > say asin(0.5,d) You say, "30"