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For a full list of available calculation functions, please read What calculation functions are supported.
Description
The TAN function returns the tangent of a given angle in radians. The tangent of an angle is a trigonometric function that represents the ratio of the length of the side opposite the angle to the length of the adjacent side in a right triangle.
Syntax
TAN(angle_in_radians)
The TAN function syntax has the following arguments:
- angle_in_radians: Required. The angle in radians for which you want to calculate the tangent.
Example
| Formula | Description | Result |
| =TAN(PI()/4) | Calculates the tangent of 45 degrees (π/4 radians). | 1 |
| =TAN(0) | Calculates the tangent of 0 degrees. | 0 |
| =TAN(PI()/2) | Calculates the tangent of 90 degrees (π/2 radians). | Undefined |
Errors
For a full list of formula errors, please read Formula errors.