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Brocha97
@Brocha97
April 2019
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Sohcahtoa comment je dois faire?
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Omnes
Verified answer
Salut,
S = sinus
O = Opposé
H = hyphotènuse
C = cosinus
A = Adjacent
H = Hypothènus
T = tangente
O = Opposé
A = Adjacent,
Cosinus 54 = ER/EM
Cosinus 54 = 3.8/EM
3.8/cos54 = EM
EM ≈ 6.46cm
Tu sais que EMR triangle rectangle,
Donc EM² = ER² + RM²
RM² = EM² - ER²
RM² = 6.46² - 3.8²
RM² = 27.2916
RM = rac(27.2916)
RM ≈ 5.22 cm
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Thanks 1
isapaul
Bonsoir
MR est le côté Opposé à l'angle de 54°
ER est le côté Adjacent à l'angle 54° donc on prend
Tan 54° = côté Opposé / côté Adjacent = MR / ER
ce qui revient à
MR = côté Adjacent * Tan 54° = 3.8 * 1.376 = 5.2 cm = 52 mm
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Verified answer
Salut,S = sinus
O = Opposé
H = hyphotènuse
C = cosinus
A = Adjacent
H = Hypothènus
T = tangente
O = Opposé
A = Adjacent,
Cosinus 54 = ER/EM
Cosinus 54 = 3.8/EM
3.8/cos54 = EM
EM ≈ 6.46cm
Tu sais que EMR triangle rectangle,
Donc EM² = ER² + RM²
RM² = EM² - ER²
RM² = 6.46² - 3.8²
RM² = 27.2916
RM = rac(27.2916)
RM ≈ 5.22 cm
MR est le côté Opposé à l'angle de 54°
ER est le côté Adjacent à l'angle 54° donc on prend
Tan 54° = côté Opposé / côté Adjacent = MR / ER
ce qui revient à
MR = côté Adjacent * Tan 54° = 3.8 * 1.376 = 5.2 cm = 52 mm