math.cos

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

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

math.cos
Function
Syntax
math.cos(
  • num : number
)

Returns number
API math
Source Lua (source)

Return the cosine of num.

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