Trigonometry Worksheet With Answers
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1Trigonometry Homework – Answers
1)
(a)
(b)
(c)
R
C
Z
7.8cm
2.6cm
43°
37°
5.7cm
Q
P
10cm
B
A
X
Y
10
5.7
=cos 37 °
AC
=tan R
XZ
=sin 43 °
2.6
10=XZ ×cos 37 °
7.8
5.7
−1
10
AC=7.8sin 43°
R=tan
= XZ
2.6
=5.32 cm
cos 37 °
=65.5 ˚
XZ =12.5 cm
2)
C
AC
=sin 65 °
5
5m
AC =5sin 65 °
=4.53m
65°
B
A
40
=tan C
3)
A
40km
B
70
40
−1
C=tan
70
70km
=29.7 ˚
Bearing=360−29.7=330.3˚
C
2
2
2
Distance: CA
=40
70
=6500
CA=
6500
=80.6 km
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