Year 10 Trigonometry Test Ch 14
ANSWER SHEET
1. With reference to angle q , label the hypotenuse, opposite and adjacent sides
q
H
O
Use your calculator to find the tan, cos and sin for each angle (to 4 decimal places)
2
3
4
5
6
Angle size
7o
37.5o
48o
64o
89o
Tan
0.1227
0.7673
1.1106
2.0503
57.2899
Cos
0.9925
0.7933
0.6691
0.4383
0.0174
Sin
0.1218
0.6087
0.7431
0.8987
0.9998
Use your calculator to find the angle size (to 2 decimal places) using the ratios given
7
8
9
10
11
ratio
(tan) 0.4165
(sin) 0.7193
(cos) 0.6947
(tan) 0.3521
(cos) 0.9986
Angle size
22.61
46
46
19.40
3.03
Use the sine, tangent or cosine ratios to find the unknown lengths marked with - x
Round up to nearest unit
12
13
x
x
20
43
o
o
35m
15
X = 13
X= 14
14
15
4.9m
x
3cm
18o
25o
X=7
x
X=5