Calculate the arctangent of a number.

`=ATAN(number)`

- number - the tangent of the angle to calculate

`=ATAN(3/3)`

The ATAN function is used to calculate the arctangent of a given number, in either radians or degrees. For example, to calculate the arctangent of 3/3, you can use the above formula. This will return 0.785 radians.

`=ATAN(1)*180/PI()`

This formula calculates the arctangent of 1 in degrees, and will return 45 degrees.

`=DEGREES(ATAN(1))`

Another way to calculate the arctangent of 1 in degrees is to use the DEGREES function in combination with the ATAN function, and will also return 45 degrees.

The ATAN function calculates the arctangent of a number, which is the inverse tangent of the input number and the angle whose tangent is the input number.

- The ATAN function calculates the arc-tangent of a number, which is the inverse of TAN.
- The ATAN function can be used to compute the angle of a point in the Cartesian Coordinate System.

The ATAN function is the inverse of the TAN function. It returns the angle of a right-triangle from the ratio of the opposite side over the adjacent side of the triangle.

The ATAN function is useful for getting the angle for a Cartesian Coordinate point.

The ATAN function has a limited range from -pi/2 to pi/2.

Yes, the ATAN function can also be used for:

- Calculating the angle of any two points on a circle
- Calculating the angle between two lines
- Calculating the angle of a triangle

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