TAN()
Syntax. TAN(number)
Definition. This function returns the tangent of an angle.
Argument
number (required) The angle in radians for which you want the tangent
Background. In a right triangle, the ratio between the opposite leg and the adjacent leg depends on the apex angle. The ratio of the opposite leg of an angle and the adjacent leg is the tangent (tan) of an angle.
The TAN() function requires radians for calculations. If the angle is specified in degrees, you have to multiply the angle by PI()/180 or convert it with the RADIANS() function.
If angle α in an unit circle (c = 1) increases between 0° and 90°, the tangent increases between 0 and ∞ ...
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