SolvingTriangles
SOLVING TRIANGLES
Solving right triangles
Law of sines
Law of cosines
Solving nonright triangles
Exam
Vocabulary
The end
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Exam
Exam
1. In a right triangle, knowing that a = 10 cm and B = 30
^{o}
, then
a) b = 5cm; c = 8.66 cm; C = 60
^{o}
b) b = 8.66 cm; c = 5 cm; C = 60
^{o}
c) b = 9 cm; c = 7 cm; C = 60
^{o}
d) None of them
2. In a right triangle, knowing that b = 7 cm and B = 25
^{o}
, then
a) a = 15.01 cm; c = 16.56 cm; C = 65
^{o}
b) a = 16.56 cm; c = 15.01 cm; C = 65
^{o}
c) a = 15.01 cm; c = 15.01 cm; C = 65
^{o}
d) None of them
3. In a right triangle, knowing that b = 3 cm and c = 5 cm, then
a) B = 40
^{o}
b) B = 40
^{o}
15' 30''
c) B = 30
^{o}
57' 30''
^{}
d) B = 30
^{o}
57' 49.5''
^{}
4. In a nonright triangle, knowing that a = 4 m, b = 8 m and C = 50
^{o}
, then
a) c = 4.77 m
b) c = 6.23 m
c) c = 11 m
d) None of them
5. In a triangle, knowing that a = 10 m, b = 5 m and B = 30
^{o}
, then
a) A = 85
^{o}
b) A = 55
^{o}
c) A = 95
^{o}
d) It is a righttriangle
6. In a nonright triangle, knowing that a = 10 m, A = 20
^{o }
and B = 50
^{o}
, then
a) b = 22 m
b) b = 22,1 m
c) b = 22,4 m
d) b = 28 m
7. In a nonright triangle, knowing that a = 5 m, c = 4 m and C = 30
^{o}
, then
a) c = 3 m
b) c = 2.52 m
c) c = 3.52 m
d) None of them
8. In a nonright triangle, knowing that a = 7 m, b = 4 m and c = 5 m, then
a) A = 101
^{o}
32' 13''
b) A = 78
^{o}
27' 47''
c) A = 103
^{o}
22' 13''
d) A = 101
^{o}
32' 53''
9. In the same triangle from exercise 8 the area is:
a) 10 m
^{2}
b) 10,79 m
^{2}
c) 9,79 m
^{2}
d) None of them
10. In a nonright triangle, knowing that c = 5 m, A = 60
^{o}
and B = 70
^{o}
, then
a) a = 5.65 cm
b) a = 565 cm
c) a = 8.65 m
d) None of them
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