Reference > Functions reference > Trigonometric functions

Trigonometric functions
Trigonometric functions are used to calculate degrees, angles, and other geometric data.
Click a function name for details.

 This function Does this Acos Returns the arccosine (Acos), or inverse cosine, of a number. Asin Returns the arcsine (Asin), or inverse sine, of a number. Atan Returns the trigonometric arc tangent (Atan), or inverse tangent, of a number. Cos Returns the cosine (Cos) of angleInRadians. Degrees Converts angleInRadians to degrees. Pi Calculates the value of the constant Pi. Radians Converts angleInDegrees to radians. Sin Returns the sine (Sin) of angleInRadians expressed in radians. Tan Returns the tangent (Tan) of angleInRadians.
Notes
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.
The return values of all trigonometric functions except Degrees, Pi, and Radians are valid only up to 15 decimal places even if you use the SetPrecision function to specify greater precision.
Related topics