Excel Function : TAN
Math and trigonometry
Returns the tangent of a number
Microsoft Excel Reference Page
Syntax and Description of the TAN Excel Function
The syntax for the TAN function in Microsoft Excel is: TAN(number) where the number argument is the angle in radians for which you want to calculate the tangent.
About TAN Excel Function
The TAN function returns the tangent of a number. The tangent is the ratio of the length of the side opposite to the angle to the length of the side adjacent to the angle.