Tan Function
TOC
Collapse the table of content
Expand the table of content

Tan Function

Office 2013 and later
GitHub-Mark-64px

Contribute to this content

Use GitHub to suggest and submit changes. See our guidelines for contributing to VBA documentation.

Returns a Double specifying the tangent of an angle.

Syntax

Tan( number )

The required number argument is a Double or any valid numeric expression that expresses an angle in radians.

Remarks

Tan takes an angle and returns the ratio of two sides of a right triangle. The ratio is the length of the side opposite the angle divided by the length of the side adjacent to the angle.

To convert degrees to radians, multiply degrees by pi/180. To convert radians to degrees, multiply radians by 180/pi.

This example uses the Tan function to return the tangent of an angle.

Dim MyAngle, MyCotangent
MyAngle = 1.3    ' Define angle in radians.
MyCotangent = 1 / Tan(MyAngle)    ' Calculate cotangent.


Show:
© 2016 Microsoft