Function atan

Calculate the inverse tangent of a value.

For matrices, the function is evaluated element wise.

Syntax

atan(x)

Parameters

Parameter Type Description
x number | BigNumber | Complex | Array | Matrix Function input

Returns

Type Description
number | BigNumber | Complex | Array | Matrix The arc tangent of x

Examples

atan(0.5);           // returns number 0.4636476090008061
atan(tan(1.5)); // returns number 1.5

atan(2);             // returns Complex 1.5707963267948966 -1.3169578969248166 i

See also

tan, asin, acos