sopenvelumHIMACa Quizzes Tests x IP elotbook offers student

sopenvelumHIMACa Quizzes & Tests x IP elotbook offers students MATH 112-80 Plane Trigonometry Fall 2016 e Take a Test-Edward White-Internet Explorer P https//www.mathod.com/student/playerTestaspdtestld 13947lasesc MATH 112-80 Plane Trigonometry Fal 2016 Test: Final Exam This Question: 1 pt 29 of 45 (16 complete) v Solve the triangle. apter 1 tung Red (Do not round unta the final answer Then round to the nearest tenth as needed) (Do not round until the final answer. Then round to the nearest degree as needed) ection 12 c Chapter 1 Chapter 1 chapter Enter your answer in each or the answer boxes Getting Rea Section 21 Concept and vocabulary Quiz section 22 Concept and vocabulary Quu

Solution

Use cosine rule :

a^2 = b^2 + c^2 - 2bccos47

= 9^2 +10^2 -2*9*10cos47

= 58.24

a = 7.63 = 7.6

use sine Rule to find B:

a/sinA = b/sinB

7.6/sin47 = 9/sinB

sinB = 0.866

B = 60 deg

C = 180 -60 -47 = 73 deg