Atan

See Also: Math Functions, Acos, Asin, Tan

Purpose

Atan returns the arc tangent of a value.

Return Type

Real

Syntax

(Atan({expression}))

What It Does

Atan returns the value in radians of the arc tangent of the value of {expression}. The expression is an angle stated in radians.

Real rArcTangent
Move (Atan(.70711)) To rArcTangent

Notes

• The value of an atan expression is a number of radians. To convert radians to degrees, multiply them by 180 and divide by the value of π.

• The atan function returns arctan of {expression} in the interval ([-π/2, +π/2]) radians. (ISO/IEC 9899:201x)

• Atan converts {expression} to a real value and outputs a real value.