atan

atan(number argument) → real result

Computes the arc tangent of argument, in the interval [-PI/2, PI/2].

Parameters

• argument Number whose arc tangent will be computed.

Return

result The arc tangent of argument.

Examples

atan(0) // 0 atan(sqrt(3) / 3) // PI / 6 atan(1) // PI / 4 atan(-1) // -PI / 4