
Trigonometria
Authored by Paulo Paraíso
Education
9th Grade
Used 6+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Relativamente ao triângulo retângulo [ABC], podemos dizer que:
a é o cateto oposto a α
a é a hipotenusa
c é o cateto adjacente a α
a é o cateto adjacente a α
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Relativamente ao triângulo retângulo [ABC] podemos dizer que:
sin(α)=⅗
cos(α)=⅗
tan(α)=¾
cos(α)=⅘
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Relativamente ao triângulo [ABC], qual o valor de x, com aproximação às décimas?
6,2
4,0
8,5
6,9
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Relativamente ao triângulo, qual o valor de α, com aproximação às unidades?
73º
17º
16º
74º
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Sabendo que cos(x)=5/13, qual é o valor de sin(x)?
8/13
12/13
5/13
13/12
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Qual das seguintes expressões é falsa?
sin(30)=cos(60)
tan(30)=sin(60)/cos(60)
sin2(30)+cos2(30)=1
sin2(12)+sin2(78)=1
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Qual é o valor de sin(30)-2tan(45)+cos2(60)?
-5/4
5/4
-1
1
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