TAN function

Description

Tangent function. TAN(x) returns the tangent of the angle x. The argument x must be expressed in radians. To convert degrees to radians you use the RADIANS function.

The tangent can be represented in terms of sine and cosine: $$ \operatorname{tan}(x) = \frac{\operatorname{sin}(x)}{\operatorname{cos}(x)} $$

Example

TAN(PI()/4) equals 1.

TAN(0) equals 0.

Calculator

Graph

Function:	TAN()
	X-axis	Y-axis
Minimum:
Maximum:

Enter the argument(s) for the function, including the symbol x.
Enter the minimum and maximum for the X-axis and for the Y-axis.
To let the software define the Y-axis automatically, leave both input fields for the Y-axis empty.

Related functions

• ATAN function: returns the arc tangent of a number.
• PI function: returns value of PI.
• RADIANS function: converts degrees into radians.
• Trigonometric functions

External links

• Trigonometric functions on Wikipedia.