COS, SIN FUNCTIONS

COS function
I have given the formula syntax and usage of the COS function in Microsoft Excel.
 
Description
Returns the cosine of the given angle.
 
Syntax
COS(number)
 
The COS function syntax has the following arguments:
Number    Required. The angle in radians for which you want the cosine.

Remark
If the angle is in degrees, either multiply the angle by PI()/180 or use the RADIANS function to convert the angle to radians.

Q:
How to find the cosine values of 60 degrees?
Type the function as follows in the cell that you would like to get the result in:
=COS(60*PI()/180)

For more understanding, look at the screenshot please:

SIN function
I have given the formula syntax and usage of the SIN function in Microsoft Excel.
 
Description
Returns the sine of the given angle.
 
Syntax
SIN(number)
 
The SIN function syntax has the following arguments:
Number    Required. The angle in radians for which you want the sine.
 
Remark
If your argument is in degrees, multiply it by PI()/180 or use the RADIANS function to convert it to radians.
 
Q:
How to find the sine of 30 degrees?
Type the function as follows in the cell that you would like to get the result in:
=SIN(30*PI()/180)
 
For more understanding, look at the screenshot please: