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Math Quiz_Trignometry_Grade 8

Total questions: 15

Worksheet time: 30mins

Name
Class
Date
1.

Find the value of a.

a)

13.35

b)

12.91

c)

13.05

d)

12.83

2.
What rule should you use?
a)
Sine
b)
Cosine
3.

Find the value of x:

a)

6.99

b)

6.33

c)

13.59

d)

7.83

4.
Which of the following formulas is the Cosine rule?
a)
c2 = a2 + b2 - 4ac + cosA
b)
c2 = a2 - b2 - 2abcosC
c)
c2 = a2 + b2 - 2abcosC
d)
(cos A)/a = (cos B)/b
5.
We can use SOH-CAH-TOA for...
a)
Any triangle ever
b)
Non-right triangles only
c)
Right Triangles only
d)
Never
6.

Find the length of BD.

Hint: Use SOH-CAH-TOA

a)

35.2

b)

24

c)

75.5

d)

51.5

7.
 FInd tanX
a)
32/40
b)
40/24
c)
32/24
d)
24/32
8.
Find the measure of the missing angle.
a)
49o
b)
50o
c)
41o
d)
33o
9.

Find x round to the nearest tenth.

a)

46.1

b)

4.9

c)

16.4

d)

26.9

10.
What is the cosine of angle P?
a)
p/q
b)
q/r
c)
p/r
d)
r/q
11.
Solve for x. Round to the nearest tenth.
a)
103.5
b)
4.7
c)
55.0
d)
23.4
12.
Solve for the missing angle.
a)
50.5 degrees
b)
12.7 degrees
c)
36.9 degrees
d)
72.2 degrees
13.
Dustin is stuck at the top of a Ferris wheel. His mother is standing 38 feet from the base of the wheel watching him. If the angle of elevation from Dustin's mom to Dustin is 73o, how far off the ground is Dustin? 
a)
118.2 ft
b)
120.9 ft
c)
124.3 ft
d)
126.5 ft
14.

Find the missing side x

a)

6.65cm

b)

1.74cm

c)

5.66cm

d)

7.14cm

15.

Find the missing angle θ

a)

68o

b)

133o

c)

116o

d)

121o