Ile wynosi cos(60º-α) ?
paweł: Ile wynosi cos(60º−α) ?
16 cze 15:20
kulfon: cos(60º−α)
16 cze 15:21
16 cze 15:22
JAPON1A: cos ( 60 − a ) = cos ( 90 − ( 30 + a) ) = sin ( 30 + a )
16 cze 15:45
Mila:
cos(x−y)=cosx*cosy+sinx*siny
| | 1 | | √3 | |
cos(60−α)=cos60*cosα+sin60*sinα= |
| cosα+ |
| sinα |
| | 2 | | 2 | |
16 cze 17:45