8.2 Review Worksheet (continued)
8.2.2 Law of Sines and Law of Cosines Use a calculator to find each trigonometric ratio. Round to the nearest hundredth. 8. cos 95 ° 9. tan 178 ° 10. tan 118 °
11. sin 132 °
12. sin 98 °
13. cos 124 °
14. tan 139 °
15. cos 145 °
16. sin 128 °
Find each measure. Round lengths to the nearest tenth and angle measures to the nearest degree. 17. m ∠ C 18. PR 19. JL
9
6.8
R
B
A
J
K
20˚
122˚
140˚
8.5
135˚
17˚
10.2
L
P
Q
C
20. EF
21. m ∠ J
22. m ∠ X
J
X
E
100
L
3.9
11.7
61 80˚ K
47˚
55˚
78˚
D
F
Z
Y
3.6
Find each measure. Round lengths to the nearest tenth and angle measures to the nearest degree. 23. AB 24. m ∠ Z 25. m ∠ R
B
Q
9.7
Y
X
6.8
13
5.8
5
14.7
67˚
Z
C
A
R
P
13
12
97
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