| α | ||
Udowodnic wzor, gdzie t = tg | ||
| 2 |
| 2t | ||
tgα = | ||
| 1−t2 |
| sinx | 2sin(x/2)cos(x/2) | |||
tgx = | = | = | ||
| cosx | cos2(x/2) − sin2(x/2) |
| 2tg(x/2) | |
| 1 − tg2(x/2) |
| sinx | 2sin(x/2)cos(x/2) | |||
U{tgx} = | = | |||
| cosx | cos2(x/2) − sin2(x/2) |
| |||||||||||
= | |||||||||||
| cos2(x/2) − sin2(x/2) |
| 5^2 | 52 |
| 2^{10} | 210 |
| a_2 | a2 |
| a_{25} | a25 |
| p{2} | √2 |
| p{81} | √81 |
| Kliknij po więcej przykładów | |
|---|---|
| Twój nick | |