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For input values between -1 and 1 inclusive, this function returns the angle in radians whose cosine value is the input. This function is the inverse of the cosine function. The value can be a Decimal or Integer literal or a reference to a column containing numeric values. |
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NOTE: While this function returns values outside of the range -1 <= x <= 1, those values are not considered valid. |
For more information on the cosine function, see COS Function.
Arc secant:
The arc secant function is computed as follows:
Input Range | Output computation |
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x<=-1 | acos(1/x) |
x>=1 | acos(1/x) |
-1<x<1 | Not valid |
Numeric literal example:
D lang syntax |
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RawWrangle | true |
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Type | ref |
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showNote | true |
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WrangleText | derive type:single value: acos(0.5) |
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acos(0.5) |
Output: Returns the computation of the arc cosine of 0.5. Output value is in radians.
Column reference example:
D lang syntax |
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RawWrangle | true |
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Type | ref |
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showNote | true |
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WrangleText | derive type:single value: acos(X) as: acosX' |
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acos(X) |
Output: Returns the arc cosine of the values in X
column.
D lang syntax |
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RawWrangle | true |
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Type | syntax |
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showNote | true |
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WrangleText | derive type:single value: acos(numeric_value) |
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acos(numeric_value) |
Argument | Required? | Data Type | Description |
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numeric_value | Y | string, decimal, or integer | Name of column, Decimal or Integer literal, or function returning those types to apply to the function |
numeric_value
Name of the column, Integer or Decimal literal, or function returning that data type to apply to the function.
- Missing input values generate missing results.
- Literal numeric values should not be quoted. Quoted values are treated as strings.
- Multiple columns and wildcards are not supported.
Required? | Data Type | Example Value |
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Yes | String (column reference) or Integer or Decimal literal | 0.5 |
Example - Trigonometry Arc functions
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| EXAMPLE - Trigonometry Arc Functions |
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| EXAMPLE - Trigonometry Arc Functions |
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