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| Contents > Functions reference (alphabetical list) > Trigonometric functions > Atan function |
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| Atan function |
| Format |
Atan(number) |
| Parameter |
| number - any numeric expression or field containing a numeric expression |
| Data type returned |
| number |
| Description |
| Returns the trigonometric arc tangent (inverse tangent) of number. The arc tangent is the angle, in radians, whose tangent is equal to the specified number. |
| Examples |
| Atan(1) returns .78539816.... |
| Degrees(Atan(1)) returns 45. |
| Related topics |
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Functions reference (category list) |
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Functions reference (alphabetical list) |
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About formulas |
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About functions |
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Defining calculation fields |
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Using operators in formulas |
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| Contents > Functions reference (alphabetical list) > Trigonometric functions > Atan function |
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