Documentation/Calc Functions/ARCTAN2

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Calc Functions Home | List of functions | Abbreviations

Funktionsnavn:

ARCTAN2

Kategori:

Matematisk

Resume:

Returnerer vinklen (i radianer) mellem x-aksen og en linje fra nulpunktet (tallet X | tallet Y). Denne funktion beregner principalværdien.

Syntaks:

ARCTAN2(Number X; Number Y)

Returnerer:

ATAN2 returnerer vinklen (i radianer) mellem x-aksen og en linje fra nulpunktet til punktet ( tallet X | tallet Y). Vinklen returneres mellem -PI og PI, dvs. [-π,π].

If the function returns a positive angle it represents a counterclockwise angle from the x-axis, while a negative result represents a clockwise angle.

Argumenter:

Tallet X er værdien af ordinaten (x).

Tallet Y er værdien af koordinanten (y).

Tallet X og tallet Y kan begge være 0, hvortil funktionen returnerer 0.
If Number X and Number Y are both equal to 0, then ARCTAN2 returns the value 0.

Yderligere oplysninger:

The following illustration shows the geometry used by ARCTAN2 (φ is the angle calculated).

* Til at returnere en vinkel i grader bruger du funktionen GRADER.
Hvis funktionen returnerer en positiv vinkel, repræsenterer det en vinkel imod uret fra x-aksen, mens et negativt resultat repræsenterer en vinkel med uret.
Alternatively multiply by 180/PI() to convert the result from radians to degrees.
Beware that computer programming languages often use the opposite order of arguments for their atan2() functions.

Eksempler:

Formel	Beskrivelse	Returnerer
=ARCTAN2(−5; 9)	The function calculates the angle (in radians) between the x-axis and a line from the origin to the point (−5, 9).	2,07789483118723
=GRADER(ARCTAN2(12,3; 12,3))	Calculate the angle (in degrees) between the x-axis and a line from the origin to the point (12,3, 12,3).	45
=ARCTAN2(D1; D2) where cells D1 and D2 both contain the value 0.	The function returns 0.	0
=ARCTAN2(−5; −3)*180/PI()	Calculate the angle (in degrees) between the x-axis and a line from the origin to the point (−5, −3).	−149,036243467926
GRADER(ARCTAN2(−8; 5))	Calculate the angle (in degrees) between the x-axis and a line from the origin to the point (−8, 5).	147,994616791916

Beslægtede LibreOffice-funktioner:

ODF standard:

Section 6.16.10, part 2

Relaterede (eller lignende) Excel-funktioner:

ATAN2