@options;
  repereortho(310,270,30,1,1){ 0 , moyen , noir , num1 ,i};

@figure;
  O = point( -9 , -6 )  { rond1 };
  B = point( 2 , -6 )  { i };
  demiAB = demidroite( O , B )  { i };
 C = point( -9 , -6.8 )  { fixe , i };
  D = point( -4 , -6.8 )  { fixe , i };
  sCD = segment( C , D )  { rouge };
  P = pointsur( sCD , 0.5 )  { rouge , rond2 , sansnom };
  E = point( -2 , -6.8 )  { fixe , i };
  F = point( 3 , -6.8 )  { fixe , i };
  sEF = segment( E , F );
  Q = pointsur( sEF , 0.66 )  { rond2 , sansnom };
  var angle =89*CP/CD { 44.5 };
  var longueur =0.1+EQ/EF { 0.76 };
  r_angleA = rotation( O , angle )  { noir };
  ir_angleAdemiAB = image( r_angleA , demiAB )  { i };
  sAB = segment( O , B )  { i };
  M = pointsur( sAB , longueur )  { rond1 };
  perpRdemiAB = perpendiculaire( M , demiAB )  { i };
  N = intersection( perpRdemiAB , ir_angleAdemiAB )  { rond1 };
  sGR = segment( N , M );
  sON = segment( O , N );
  sOM = segment( O , M );
  angleNOM = angle( N , O , M )  { rouge , plein30 };
  angleNMO = angle( N , M , O );
  var disON =ON { 13.3193046163037 };
  p_disON = milieu( O , N )  { i };
  t_disON1 = texte( p_disON ,"$disON$")  { (-0.41,-1.1) , dec1 };
  var disMN =MN { 9.33562399959905 };
  p_disMN = milieu( M , N )  { i };
  t_disMN1 = texte( p_disMN ,"$disMN$")  { dec1 };
  var disOM =OM { 9.5 };
  p_disOM = milieu( O , M )  { i };
  t_disOM1 = texte( p_disOM ,"$disOM$")  { dec1 };
  var mesMON =MON { 44.5 };
  texte10 = texte( P ,"Angle ($mesMON$°)")  { rouge , (-1.35,0.08) , dec1 };
  var cosinus =cos(MON) { 0.713250449154182 };
  var sinus =sin(MON) { 0.700909264299851 };
  var tangente =tan(MON) { 0.98269726311569 };
  texte11 = texte( Q ,"Longueur")  { stop , (-0.95,0.22) , dec2 };
  texte1 = texte( 3 , 1 ,"OM")  { dec2 };
  texte2 = texte( 3 , 0.5 ,"ON")  { dec2 };
  A1 = point( 3 , 0.4 )  { i };
  G1 = point( 4 , 0.4 )  { i };
  s1 = segment( A1 , G1 );
  texte7 = texte( 4 , 0.8 ,"= $cosinus$")  { stop , dec2 };
  texte3 = texte( 3 , -0.5 ,"MN")  { violetfonce , dec2 };
  texte4 = texte( 3 , -1 ,"ON")  { violetfonce , dec2 };
  A2 = point( 3 , -1.1 )  { i };
  G2 = point( 4 , -1.1 )  { i };
  s2 = segment( A2 , G2 )  { violetfonce };
  texte8 = texte( 4 , -0.7 ,"= $sinus$")  { stop , violetfonce , dec2 };
  texte5 = texte( 3 , -2.5 ,"OM")  { kaki , dec2 };
  texte6 = texte( 3 , -2 ,"MN")  { kaki , dec2 };
  A3 = point( 3 , -2.6 )  { i };
  G3 = point( 4 , -2.6 )  { i };
  s3 = segment( A3 , G3 )  { kaki };
  texte9 = texte( 4 , -2.2 ,"= $tangente$")  { stop , kaki , dec2 };

@analyse;