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Kajaa : Tozsamosci...
sin2αcosα+cos3α=cosα
cos2α/1+sinα=1−sinα
23 cze 22:35
Janek191:
sin
2 α + cos
2 α = 1 ⇒ cos
2 α = 1 − sin
2 α
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
| | cos2 α | | 1 − sin2 α | |
L = |
| = |
| = |
| | 1 + sin α | | 1 + sin α | |
| | ( 1 − sin α)*( 1 + sin α) | |
= |
| = 1 − sin α = P |
| | 1 + sin α | |
23 cze 23:18