Difference between revisions of "Documentation/How Tos/Calc: ATAN 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: ATAN2 function|ATAN2]] | * [[Documentation/How_Tos/Calc: ATAN2 function|ATAN2]] | ||
| − | * [[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
ATAN
Returns the inverse tangent (the arctangent) of a number.
Syntax:
ATAN(number)
- returns the inverse trigonometric tangent of number, in other words the angle (in radians) whose tangent is number. The angle returned is between -PI/2 and PI/2.
- To return the angle in degrees, use the DEGREES function.
Example:
ATAN(1)
- returns 0.785398163397448 (PI/4 radians).
DEGREES(ATAN(1))
- returns 45. The tangent of 45 degrees is 1.
