Difference between revisions of "Documentation/How Tos/Calc: ATAN function"

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(See also:)
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: returns <tt>'''45'''</tt>. The tangent of <tt>'''45'''</tt> degrees is <tt>'''1'''</tt>.
: returns <tt>'''45'''</tt>. The tangent of <tt>'''45'''</tt> degrees is <tt>'''1'''</tt>.
=== See also: ===
'''[[Documentation/How_Tos/Calc: COS function|COS]]''',
* [[Documentation/How_Tos/Calc: COS function|COS]]
'''[[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 13:30, 25 February 2009


Returns the inverse tangent (the arctangent) of a 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.



returns 0.785398163397448 (PI/4 radians).


returns 45. The tangent of 45 degrees is 1.


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