##### Using the ATAN2 function:

The arguments for the ATAN2 function are:

Argument | Required? | Description |
---|---|---|

x_num | Required | The x-coordinate of the point. |

y_num | Required | The y-coordinate of the point. |

##### A few more things:

• A positive result represents a counterclockwise angle from the x-axis; a negative result represents a clockwise angle. |

• ATAN2(a,b) equals ATAN(b/a), except that a can equal 0 in ATAN2 |

• If both x_num and y_num are 0, ATAN2 returns the #DIV/0! error value. |

• To express the arctangent in degrees, multiply the result by 180/PI( ) or use the DEGREES function |