Documentation/Calc Functions/ARCTAN

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ARCTAN

Matematisk

Resume:

Returnerer den inverse trigonometriske tangens (arcus-tangens) af et tal. Denne funktion beregner principalværdien.

Syntaks:

ARCTAN(Number)

Returnerer:

Denne funktion returnerer den inverse trigonometriske tangens af tallet, der er den vinkel (i radianer), hvis tangens er tallet. Den returnerede vinkel ligger mellem -PI/2 og PI/2, dvs. [-π/2,+π/2].

Argumenter:

Tallet er det reelle tal eller en reference til en celle, der indeholder tallet, hvis inverse trigonometriske tangens-værdi skal beregnes.

• If Number is non-numeric, then ARCTAN reports a #VÆRDI! error.

Yderligere oplysninger:

• Alternativt multiplicerer 180/PI() for at konvertere resultatet fra radianer til grader.

GIFen herunder illustrerer funktionen ARCTAN.

Funktionen ARCTAN

Eksempler:

Formel Beskrivelse Returnerer
ARCTAN(−1) Inverse trigonometric tangent of -1. −0,785398163397448 (-π/4)
=ARCTAN(D1) where cell D1 contains the number 0.5. Inverse trigonometric tangent of 0.5. 0,463647609000806
=GRADER(ARCTAN(0,5)) Inverse trigonometric tangent of 0.5, converted to degrees. 26,565051177078
=ARCTAN(−0,5)*180/PI() Inverse trigonometric tangent of -0.5, converted to degrees. −26,565051177078
=GRADER(ARCTAN(TAN(RADIANER(60))) An angle of 60° is converted to radians, its tangent is taken, then the inverse tangent of that value is calculated, and finally the result is converted back to degrees. 60

ATAN