Trigonometry Review
Find the value of x for each triangle. Give your answer correct to 3 significant figures.
1.
2.
3 cm
7 cm
x
25°
x
7 cm
3.
4.
x
x
25 m
7m
15 m
5.
53°
6.
x
9m
x
16 m
72°
22 m
7.
8.
6.7 m
x
54°
x
6m
15°
9.
10.
x
96 m
67 m
13 m
x
8m
11.
12.
m
x
37.5°
12°
km
x
13. A ladder of length 8 m rests against a wall so that the angle between the ladder and the wall is
31°. How far is the base of the ladder from the wall?
14. A ship sails 35 km on a bearing of 043°.
a) How far north has it travelled?
b) How far east has it travelled?
15.
Marford is 6 km east and 4 km north of
Cape Dot.
a) Steve wants to sail directly from
Cape Dot to Marford. On what
bearing should he sail?
b) Anna sails from Cape Dot on a
bearing of 048°. She stops when she
is due north of Marford. How far
north of Marford is Anna?
N
6 km
Marford
4 km
land
Cape Dot