1. 
2. 
3. 
4. 
5. 
6. 
7a. 
b. 
c. 
d. 
e. Either or 
f. 
8.
 missing side:
 angle opp. 5:
 angle opp. 8:

9.
 missing side:
 angle opp. 5:
 other angle:

10.
 missing angle:
 side opp. 54°:
 hypotenuse:

11.
 missing side:
 angle opp. 12:
 other angle:

12.
 missing angle:
 missing leg:
 hypotenuse:

13.
 missing side:
 angle opp. 3:
 other angle:

14.
 missing side:
 angle opp. 5:
 other angle:

15.
 hypotenuse:
 angle opp. 6:
 angle opp. 13:

16.
 hypotenuse:
 angle opp. 7:
 angle opp. 11:

17.
 missing angle:
 missing leg:
 hypotenuse:

18.

19.
To solve this, we will use Law of Cosines:

20. We can find the other angles by subtracting 39° from 180° and dividing by 2: .
To find the length of each side, we will use Law of Sines:

21.This problem is a twostep process. First we find x by using Law of Sines, then we find y by using sine:
We know the angle next to the 70° angle is 110°. That means the angle opposite the 210 foot side is 10° (or we could figure that moving from 60° to 70° was 10°).

22. Use Law of Cosines:
