| sin(α+β) | sin(α+β) | |||
tgα+tgβ= | oraz ctgα+ctgβ= | |||
| cosαcosβ | sinαsinβ |
| sin(x+3x) | sin(x+3x) | |||
L= | + | = | ||
| cosxcos3x | sinxsin3x |
| sin4x(cosxcos3x+sinxsin3x) | ||
= | = | |
| sinxcosx*sin3xcos3x |
| 2*2*2 sin2xcos2x*cos2x | ||
= | = | |
| 2sinxcosx*2sin3xcos3x |
| 8 sin2xcos22x | ||
= | ||
| sin2x*sin6x |
| 8cos2(2x) | ||
= | =P | |
| sin(6x) |