Líne arctan (x) áireamhán. Áireamhán tadhlaí inbhéartach.
Is í an fheidhm arctangent feidhm inbhéartach y = tan (x).
arctan ( y ) = tan -1 ( y ) = x + kπ
Do gach
k = {..., - 2, -1,0,1,2, ...}
Mar shampla, Más é 1 tadhlaí 45 °:
tan (45 °) = 1
Ansin is é 45 ° an t-arctangent 1:
arctan (1) = tan -1 (1) = 45 °
| y | x = arctan (y) | |
|---|---|---|
| céimeanna | raidianacha | |
| -1.732050808 | -60 ° | -π / 3 |
| -1 | -45 ° | -π / 4 |
| -0.577350269 | -30 ° | -π / 6 |
| 0 | 0 ° | 0 |
| 0.577350269 | 30 ° | π / 6 |
| 1 | 45 ° | π / 4 |
| 1.732050808 | 60 ° | π / 3 |
D’fhonn arctan (y) a ríomh ar áireamhán:
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