Determine whether the law of cosines can be used to22. side b = 385 mZC = 67°side a = 490 mbegin the solution process for each triangle.7.8. A23. side c = 25.8 mi12 in.85°28 km15 km15 in.ZB = 30°side a = 12.9 mi30 kmSolve using the law of cosines (if possible). Label eachtriangle appropriately before you begin.9.15 mi10.6.8 AUА49°24.12 mi92988%B10.9 km9806.7 km11.12.BC50 cm12.5 yd8 yd25. В29A15 yd49 cm538 mmFor each triangle, verify all three forms of the law ofcosines.29°465 mm13.26.В50 kmA27.5 ft30°80141°32.5 ft26.6 km70%52.4 km27. side c = 10V3 in.side b = 6V3 in.side a = 15 V3 in.28. side a = 282 ft14.Вside b = 129 ftside c = 300 ft816 mi105°577 mi29. side a = 32.8 km45°C30°Aside b = 24.9 km1114.7 miside c = 12.4 km

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egin the solution process for each triangle. 7. 8. A 12 in. 85 28 km 15 km 15 in. 30 km 9. 10. A 15 mi 6.8 AU 49%

11th Edition

ISBN:9780134217437

Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels

Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels

Chapter1: Trigonometric Functions

Section: Chapter Questions

Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.

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