ATAN

This function calculates the arctangent, that is, the angle whose tangent is the specified value.

Syntax

ATAN(value)

Arguments

[Required] For the argument, specify the tangent of the angle you want to return.

Remarks

The result angle is in radians between –PI/2 and PI/2. If you want to convert the result to degrees, multiply the result by 180/PI.

Examples

ATAN(B3)

ATAN(R3C2)

ATAN(1) gives the result 0.7853981634