Transcribed Image Text: Solve triangles using the law of cosines You might need: Calculator Find BC. Round to the nearest tenth. 6 13 91° A Show Calculator Stuck? Watch a video or use a hint. Report a problem

Transcribed Image Text: Search Khan Academy Dona Solve triangles using the law of cosines You might need: E Calculator Find mZB. Round to the nearest degree. Round to the nearest degree. ALG As TRI 14 As MY 8 Co 11 MY C Pro Pro Show Calculator Tea

5. Use a graphing or scientific calculator and the law of cosines, c = a² +² - 2ab cos C, a = b° +c - 2bc cos A, and b = a +c° - 2ac cos B to find the missing angle to the nearest degree or length to the nearest tenth. %3D A a = 6,6 = 13, c = 12, ZB =_ D94 O 43° O 68° O 86° O 47

Use the law of cosines to determine the length x in each figure when a = b = 1.4 m. Use a calculator and round the answers to one decimal place. (a) a 720 X = (b) 1080 b

Solution for Use the Law of Cosines to determine the indicated side x. (Assume b = 4 and c = 1. Round your answer to one decimal place.)

Solution for Use the Law of Cosines. Find x to the nearest tenth. B 16 to 34 19 C

The three shown circles, with radius 15 in., 10.5 in., and 4.5 in., are tangent to each other. (a) Calculate the angle ? (in degrees) by using the law of cosines. (Law of cosines: c 2 a 2 + b 2 − 2 a b c o s γ ) (b) Calculate the angles γ and α (in degrees) using the law of sines. (c)Check that the sum of the angles is 180°.

Textbook solution for Calculus: Early Transcendentals (2nd Edition) 2nd Edition William L. Briggs Chapter 1.4 Problem 49E.