math.rad

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math.rad
Function
Syntax
math.rad()
Returns number
API math
Source Lua (source)

Convert the number num from degrees to radians.

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