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ATAN |
  
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ATAN |
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This function calculates the arctangent, that is, the angle whose tangent is the specified value.
Syntax
ATAN(value)
Arguments
For the argument, specify the tangent of the angle you want to return, which must be a value between –1 and 1.
Remarks
The result angle is in radians between –PI/2 and PI/2. If you want to convert the result to degrees, multiply the result by 180/PI.
Data Types
Accepts numeric data. Returns numeric data.
Examples
ATAN(B3)
ATAN(R3C2)
ATAN(1) gives the result 0.7853981634
See Also