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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 argument x can be a real number, a complex number, or a matrix. When it is a matrix, the function returns a matrix with the same dimensions and with the TAN function applied to all elements.

Sine, Cosine, and Tangent in unit circle

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

TAN function

Function:

TAN()

X-axis

Y-axis

Minimum:

Maximum:

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.