ATAN2 function

ATAN2(NumberX, NumberY) ATAN2(NumberX; NumberY)

NumberX

Number or { Number }

The first input coordinate.

NumberY

Number or { Number }

The second input coordinate.

Returns

Number or { Number }

The inverse trigonometric tangent.

Returns the inverse trigonometric tangent of two coordinates.

Example

DEGREES(ATAN2(-1, -1))DEGREES(ATAN2(-1; -1))

Returns -135.