**General View:**

Atan(Xdata array,Y data array)

This is a trigonometric function dealing with the relationships between angles and the legs of the right triangle.

The result of the function is returned in degrees from 0 to 359.9

*For example :*

Atan(10,10) returns the value of 45,

And atan(20,0) return the value of 90

MQL4 : The function returns the arc tangent of x. If x is equal to 0, the function returns 0.

Parameters

value

[in] A number representing a tangent.

Return Value

MathArctan returns a value within the range of –π/2 to π/2 radians.

Note

Instead of the MathArctan() function you can use atan().