atan()

Read(263) Label: arc tangent,

Description:

Compute the arc tangent value of the parameter.

Syntax:

atan (number)

Note:

The parameter number is a real number.

Parameters:

number

Real number for which you want to compute the arc tangent

Return value:

Arc tangent

Example:

atan(1)

0.7853981633974483

atan(tan(pi()/2))

1.5707963267948966

atan(tan(0))

0.0

Related functions:

asin()

acos()