Arguments
label	type	description
A	variable or constant	variable or constant (in radians) of which the cosine is to be taken
Returns
Result	variable or constant	Result will be of the same type as A (i.e., either a variable or constant).

Description

cos calculates the cosine of the latest variable or constant item on the stack, expecting an input value in radians rather than degrees.

Example

pi cos

Live Example Link