| 2sin2x | 2sinxcosx | 2sinxcosx | sinx | |||||
L= | =2 | =2 | =2 | =2tgx. | ||||
| 1+cos2x | 1+cos2x−sin2x | 2cos2x | cosx |
| 2sin2x | 4sinxcosx | |||
L= | = | = | ||
| 1+cos2x | 1+cos2x−sin2x |
| 4sinxcosx | 4sinxcosx | 2sinx | ||||
= | = | = | =2tgx | |||
| sin2x+cos2x+cos2x−sin2x | 2cos2x | 2cosx |
Mam cos 45 i α∊(270°;360°)
oblicz cos(α+150°)