Trigonometric functions
Trigonometric functions are used to calculate degrees, angles, and other geometric data.
Note  All trigonometric functions use radians as the unit of measure. Once you have a result, you can convert the radians into degrees using the Degrees function.
Click a function name for details.
 
The value of the constant Pi, which is approximately 3.14159.
Topics in this section
Acos
Asin
Atan
Cos
Degrees
Pi
Radians
Sin
Tan