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- ATAN (Arc Tangent)
- Calculates the arc tangent, or inverse, of a tangent. The result is in the corresponding angle in radians, in the range -PI/2 to PI/2.
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- Format: ATAN (number)
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- Argument:
- ΓÇó number: A tangent value or a simple operation that yields a tangent.
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- Example:
- ATAN (1) returns .785.
- Shows that the arc tangent of 1 is .785 radians (PI/4), which is 45 degrees.