math.sin

math.sin Function
Syntax math.sin( num : number )
Returns	number
API	math
Source	Lua (source)

Returns the sine of num.

 Note: The argument must be given in radians. If it is in degrees, use the math.rad function to convert it.

ExamplePrint the sine of user input
Read a line from the user, convert it to radians using math.rad, then print its sine.
Code	print(math.sin(math.rad(tonumber(read())))
Output	Depends on what the user wrote. For instance, if they were to enter 90, the number printed would be 1.