TAN

Definition: The TAN function in Excel is used to find the tangent of an angle.

Syntax: ==TAN(number).

Situation: This formula is appropriate in situations where you need to find the tangent of an angle in radians.

Example: If you have an angle of 45 degrees, you would need to convert it to radians by multiplying it by pi/180. So the formula would be =TAN(45*pi()/180). This would return a value of 1, which is the tangent of 45 degrees in radians.