Name: Period: Date: Practice Worksheet: Law of Cosines alpha -> Y= 1. MLA = Using the Law of Cosines, solve AABC using the given measurements. Round answers to 2 decimal places. a = 15 2. MLA = MLB = 100 a = 10 b = mLC = MLB = b = 15 13 . 9 . 2- ] c = 11 mLC = c = 13 COST1 = ( Identify the case as AAS, ASA, SSA, SAS, or SSS. Determine which process (Law of Sines or Law of Cosines) must be used first in solving the triangle. If SSA case, how many solutions will it have? 3. MLB = 7 4. mLA = 41 5. b = 32 a = 28 b = 13 a = 29 C = 33 a = 10 C = 9 6. mLA = 60 7. mlB = 55 8. b = 15 MLB = 40 mLC = 48 C = 9 C = 15 C = 16 MLA = 22Sketch each triangle and label the given information. Find the missing value indicated using Law of Cosines or Law of Sines as needed. Show all work. Round to two decimal places where needed. 9. mLC = 23', a = 8 and b = 17, find c. 10. a = 14, b = 9, and c = 6, find m/A. 11. mZA = 60 , b = 14, and c = 8, find m/B. 12. a = 30, b = 34, and c = 21, find mZA. COS (302- 342- 2141 - 2 ( 34 ) ( 21 ) 30 = a CA=60.78 D C= 21 h = 34 COSA = [az -b2- cz - 2 bC 13. mLB = 129 , b = 33, and c = 25, find a. 14. a = 9, b = 12, and c = 15, find m/C. 15. mLA = 39 , mLB = 51, and c = 27, find a. 16. What do you notice about the triangles in #15 and #16