7. + 0.22 points LarPreCalcRMRPAt6 7.2.008. In the triangle below, x = 9, Use th

Question

7. + 0.22 points LarPreCalcRMRPAt6 7.2.008. In the triangle below, x = 9, Use the Law of Cosines to solve the triangle 18 cm 12 Need Help? Readis Talk toa Titer 8. + 0.22 points RPAt6 7.2.016 Use the Law of Cosines to solve the triangle. (Round your answers to two decimal places.) C 1050, a 19, b = 5 Need Help?Read ItTalk to a Tutor 9. + 0.22 points 7.2.032. Determine whether the Law of Sines or the Law of Cosines can be used to find another measure of the triangle a= 10, b= 13, C=68" o Law of Sines Law of Cosines Then solve the triangle. (Round your answers to four decimal places.) Need Help?Read It Watch It Talk to a Tutor Viewing Saved Work Revert to Last Response

Explanation / Answer

7) a = 9

b = 18

c = 12

applying law of cosines

9^2 = 18^2 + 12^2 - 2(18)(12) cos A

A = 26.38 degrees

finding B

18^2 = 9^2 + 12^2 - 2(9) (12) cos B

B = 117.28 degrees

C = 180 - (117.28 + 26.38)

C = 36.34 degrees

8) C = 105 , a = 19 , b = 5

c^2 = 19^2 + 5^2 - 2 (19) (5) cos 105

c = 20.86

19^2 = 20.86^2 + 5^2 - 2(20.86 )( 19) cos A

A = 61.62 degrees

B = 180 - (61.62 + 105)

B = 13.39

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