Documentation/How Tos/Calc: ATAN function
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CALC FUNCTIONS
- Mathematical FunctionsTrigonometric
- CosSinTanCotAcosAcotAsinAtanAtan2DegreesRadiansPiHyperbolic
- CoshSinhTanhCothAcoshAcothAsinhAtanhRounding and remainders
- TruncRoundRounddownRoundupCeilingFloorEvenOddMroundIntQuotientModLogarithm/Powers
- ExpPowerLogLnLog10Bessel functions
- BesseliBesseljBesselkBesselyMiscellaneous
- AbsCombinCombinaConvertConvert AddCountblankCountifDeltaErfErfcFactFactdoubleGcdGcd AddGestepIsevenIsoddLcmLcm AddMultinomialProductRandRandbetweenSeriessumSignSqrtSqrtpiSubtotal
Contents
ATAN
Returns the inverse tangent (the arctangent) of a number.
Syntax:
ATAN(number)
- returns the inverse trigonometric tangent of number, in other words the angle (in radians) whose tangent is number. The angle returned is between -PI/2 and PI/2.
- To return the angle in degrees, use the DEGREES function.
Example:
ATAN(1)
- returns 0.785398163397448 (PI/4 radians).
DEGREES(ATAN(1))
- returns 45. The tangent of 45 degrees is 1.
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