求某个数的正弦值(sine).
Sin ( 表达式 )
Local $pi = 3.14159265358979 Local $x = Sin($pi / 4) ;returns 0.707106781186547 which you should recognize as sqrt(2)/2 Local $degToRad = $pi / 180 Local $y = Sin(90 * $degToRad) ;sine of 90°