Returns the arc cosine, i.e. the inverse cosine (cos-1), of a value.
Syntax
ACOS(Value)
Input
Value | is a value |
Domain type: | any Value domain |
Value range: | [-1,1] |
Output
ACOS returns: | a real value in radians |
Domain: | system domain Value |
Value range: | [0,p] |
Notes:
Tip:
When the definition symbol = is used, a dependent output map or dependent output column is created; when the assignment symbol := is used, the dependency link is immediately broken after the output map/column has been calculated.
Usable in
MapCalc, TabCalc, Simple calculators
Examples
Pocket line calculator examples:
? ACOS(0.3) |
returns 1.266 |
MapCalc example:
OutMap = ACOS(InMap)
InMap1 |
OutMap1 |
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OutMap2 = RADDEG(ACOS(InMap2))
InMap2 |
OutMap2 |
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TabCalc example:
OutCol1 = ACOS(InCol1)
OutCol2 = RADDEG(ACOS(InCol2))
InCol1 |
OutCol |
InCol2 |
OutCol2 |
2.0 |
? |
0.000 |
0 |
1.0 |
0.000 |
0.500 |
30 |
0.5 |
1.047 |
0.707 |
45 |
0.2 |
1.369 |
0.866 |
60 |
0.3 |
1.266 |
1.000 |
90 |
-1.0 |
3.142 |
???? |
180 |
? |
? |
-1.000 |
270 |
-0.4 |
1.982 |
-0.707 |
315 |
-0.1 |
1.671 |
? |
? |
See also: