trigo.py

Created by stella-maestre

Created on May 26, 2021

541 Bytes

Les mesures suivantes sont bonnes à connaître.
Mesure en degré 0 30 45 60 90 180
Mesureenradian 0 π/6 π/4 π/3 π/2 π


pour cos et sin on a les valeurs particulières:
  mesure en radiant: 0; pi/6; pi/4; pi/2
  cos: 1; racine3/2; racine 2/2; 1/2; 0
  sin: 0; 1/2; racine2/2; racine 3/2; 1

cos^2(α) + sin^2(α) = 1

® cos(−α) = cos(α)
® cos(α+π)=−cos(α) 
® cos(π−α)=−cos(α)
® cos(α + π2) = sin(α) 
® cos(π/2 − α) = sin(α)
® sin(−α) − sin(α)
® sin(α+π)=−sin(α) 
® sin(π−α)=sin(α)
® sin(α + π/2) = cos(α) 
® sin(π/2 − α) = cos(α)

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