IMG-20190921-WA0002_22_10_2019_09_55 - Rease La rab ABC est un triangle rectangle en C 1-1 Designation des cotes Le cote c oppose a l'angle droit est

# IMG-20190921-WA0002_22_10_2019_09_55 - Rease La rab ABC est...

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Unformatted text preview: Rease La rab ABC est un triangle rectangle en C, 1-1 Designation des cotes Le cote c - oppose a l'angle droit - est appele : " hypethe mura erican Prc a l'angle a et aussi le cote adjacent Le cote a est le cote ofthede a l'angle B et aussi le cote adjacent Le cote b est le cote enhost 1-2 Relations entre angles et cotes Remarque COSB = sole adi Comme I toujours cosa = cosinus coleen a sin B = sore on compri 10 2 La tan SIN STI Exercices 12D RELATIONS DANS LE TRIANGLE Page DOC 1 sur 1 Triangle isocele Le triangle ci-contre est isocele. e cote CB = 6 m. es cotes AC et AB sont egaux. angle a = = rad = 60 Calculer l'angle B, en rad et en + B = 4 7 B = 1 - 0 - B=1 - 1- 391-21 9 2 x3 Calculer la hauteur du triangle AD, en m 6 - AD = kam a x DB DB = 3 m donc AD = Kom 1 Calculer la longueur du cote AB, en m 2 = ( AD ) + DB 2 - AB = V( AD' + DB) ? V(3)2 +5. 19612-135 098-5 91998 ARN CM...
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