
3EM Mod06 Trigonometria no triângulo retângulo
Authored by Sergio DaltosoJr
Mathematics
12th Grade
Used 48+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Se um triângulo retângulo tem catetos a e b e hipotenusa c, então é verdade que:
a² = b² + c²
b² = a² + c²
c² = a² + b²
a² = b² – c²
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Qual dos pares de ângulos a seguir pode ser usado para desenhar um triângulo retângulo?
10° e 70°
40° e 60°
22° e 78°
15° e 75°
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
As razões trigonométricas são consequências...
... do Teorema de Pitágoras
... da simetria dos triângulos
... da semelhança de triângulos
... dos tipos de triângulos
... da fórmula de Báskara
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para obter o cosseno de um ângulo, fazemos:
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na figura, sen α é:
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na figura ao lado, tg β vale:
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Qual a afirmação a seguir está errada?
sen 10° = cos 80°
cos 25° = sen 65°
sen 32° = cos 68°
cos 70° = sen 20°
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