Difference between revisions of "Documentation/How Tos/Calc: ATAN2 function"
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* [[Documentation/How_Tos/Calc: SIN function|SIN]] | * [[Documentation/How_Tos/Calc: SIN function|SIN]] | ||
* [[Documentation/How_Tos/Calc: TAN function|TAN]] | * [[Documentation/How_Tos/Calc: TAN function|TAN]] | ||
− | * [[Documentation/How_Tos/Calc: COT function|COT]] | + | * [[Documentation/How_Tos/Calc: COT function|COT]] |
* [[Documentation/How_Tos/Calc: ACOS function|ACOS]] | * [[Documentation/How_Tos/Calc: ACOS function|ACOS]] | ||
* [[Documentation/How_Tos/Calc: ASIN function|ASIN]] | * [[Documentation/How_Tos/Calc: ASIN function|ASIN]] | ||
* [[Documentation/How_Tos/Calc: ATAN function|ATAN]] | * [[Documentation/How_Tos/Calc: ATAN function|ATAN]] | ||
− | * [[Documentation/How_Tos/Calc: ACOT function|ACOT]] | + | * [[Documentation/How_Tos/Calc: ACOT function|ACOT]] |
− | * [[Documentation/How_Tos/Calc: DEGREES function|DEGREES]] | + | * [[Documentation/How_Tos/Calc: DEGREES function|DEGREES]] |
− | * [[Documentation/How_Tos/Calc: Mathematical functions|Mathematical functions]] | + | * [[Documentation/How_Tos/Calc: Mathematical functions|Mathematical functions]] |
* [[Documentation/How_Tos/Calc: Functions listed alphabetically|Functions listed alphabetically]] | * [[Documentation/How_Tos/Calc: Functions listed alphabetically|Functions listed alphabetically]] | ||
* [[Documentation/How_Tos/Calc: Functions listed by category|Functions listed by category]]}} | * [[Documentation/How_Tos/Calc: Functions listed by category|Functions listed by category]]}} |
Revision as of 13:52, 26 February 2009
ATAN2
Returns the inverse tangent (the arctangent) for specified x and y coordinates.
Syntax:
ATAN2(x_coord; y_coord)
- x_coord is the value of the x coordinate.
- y_coord is the value of the y coordinate.
- ATAN2 returns the inverse trigonometric tangent, that is, the angle (in radians) between the x-axis and a line from point x_coord, y_coord to the origin. The angle returned is between -PI and PI.
- To return the angle in degrees, use the DEGREES function.
Example:
ATAN2(20; 20)
- returns 0.785398163397448 (PI/4 radians).
DEGREES(ATAN2(12.3; 12.3))
- returns 45. The tangent of 45 degrees is 1.