The use of Cos function
function function: Returns the cosine of the given angle. This is consistent with the knowledge of mathematics.
function syntax: COS (number)
Number is the angle to which the cosine is required, expressed in radians.
If the argument is in degrees, you can multiply it by PI ()/180 or use the RADIANS function to convert it to radians.
Two, the Cos function example
=cos (1.047) 1.047 radians cosine (0.500171)
=cos (60*PI ()/180) 60 degrees cosine (0.5)
=cos (RADIANS (60)) Cosine of 60 degrees (0.5)