tożsamości trygonometryczne
Łukasz: | | 1−sinx | | π | | x | |
1. |
| − ctg( |
| + |
| ) |
| | cosx | | 4 | | 2 | |
| | 1+sinx | | π | | x | |
2. |
| * tg( |
| − |
| )=ctgx |
| | sinx | | 4 | | 2 | |
17 cze 19:58
Łukasz: Proszę o pomoc, wskazówki, cokolwiek.
17 cze 20:27
Łukasz: nikt nie pomoże? nikt nie ma pomysłu?
17 cze 21:08
Mila:
| | | | x | | x | | x | | x | | sin2 |
| +cos2 |
| −2sin |
| *cos |
| | | | 2 | | 2 | | 2 | | 2 | |
| |
= |
| = |
| | | |
| | | |
= |
| = |
| | | | x | | x | | x | | x | | (cos |
| −sin |
| )(cos |
| +sin |
| ) | | | 2 | | 2 | | 2 | | 2 | |
| |
| | | | x | | π | | x | | π | | (cos |
| cos |
| −sin |
| *sin |
| ) | | | 2 | | 4 | | 2 | | 4 | |
| |
= |
| = |
| | | | x | | π | | x | | π | | (cos |
| cos |
| +sin |
| *sin |
| ) | | | 2 | | 4 | | 2 | | 4 | |
| |
17 cze 21:27