| 1 | π | |||
tgx*tg5x = 1 ⇔ tg5x = | ⇔ tg5x = ctgx ⇔ tg5x = tg( | − x) | ||
| tgx | 2 |
sin 3x + sin x − sin 2 x = 0
2 sin 2 x cos x − sin 2x = 0
sin 2x *( 2 cos x − 1) = 0
sin 2 x = 0 lub 2 cos x − 1 = 0
| 1 | ||
sin 2 x = 0 lub cos x = | ||
| 2 |
| π | π | |||
2 x = π*k lub x = − | + 2π k lub x = | + 2π k | ||
| 3 | 3 |
| π | π | π | ||||
x = | *k lub x = − | + 2π k lub x = | +2 π k | |||
| 2 | 3 | 3 |