Changes

The '''arctangent''' function is the inverse of the [[tangent]] function.  Whereas tangent converts an angle to the ratio of the length of the opposite side of a right triangle to the adjacent one, arctangent is used to find the angle when the ratio is known.

The '''arctangent''' function is an [[inverse trigonometric function]] which is the inverse of the [[tangent]] function.  Whereas tangent converts an angle to the [[ratio]] of the length of the opposite side of a [[right triangle]] to the adjacent one, arctangent is used to find the angle when the ratio is known. The arctangent function is often abbreviated ''arctan''.

[[category:geometry]]

[[category:Mathematics]]