P(2,3), r2 = 22+32
r2 = 13, r= √13
| 3 | 3√13 | |||
sinα = | = | |||
| √13 | 13 |
| 2√13 | ||
cosα = U{2{√13} = | ||
| 13 |
| 3 | ||
tgα = | ||
| 2 |
| 2 | ||
ctgα = | ||
| 3 |
| −2√5 | ||
C(−2,−4). Sprawdź wyniki: r=2√5, sinα = | , | |
| 5 |
| −√5 | 1 | |||
cosα = | , tgα = 2, ctgα = | |||
| 5 | 2 |