| Excerpt |
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Computes the tangent of an input value for an angle measured in radians. The value can be a Decimal or Integer literal or a reference to a column containing numeric values. |
In the above, the tangent of angle A is computed as the following:
The cotangent of angle A is 1/tan(A), or:
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cot(A) = 1/tan(A) = y/x |
You can convert from degrees to radians. For more information, see RADIANS Function.
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: round(tan(radians(30)),3) |
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|
round(tan(radians(30)),3) |
Output: Returns the computation of the tangent of a 30-degree angle, which is converted to radians before being passed to the tan function. The output value is rounded to three decimals: 0.577.
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: tan(X) as: 'tanX' |
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|
tan(X) |
Output: Returns the tangent of the radians 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: tan(numeric_value) |
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tan(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 functions
| Include Page |
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| EXAMPLE - Trigonometry Functions |
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| EXAMPLE - Trigonometry Functions |
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