SOLUTION: Use Law of Cosines to prove the measures of angles A, B, and C in the triangle below are equal. Then find the exact value of cos A and explain why that value implies mA = 60°.
htt
Algebra ->
Formulas
-> SOLUTION: Use Law of Cosines to prove the measures of angles A, B, and C in the triangle below are equal. Then find the exact value of cos A and explain why that value implies mA = 60°.
htt
Log On
Question 892175: Use Law of Cosines to prove the measures of angles A, B, and C in the triangle below are equal. Then find the exact value of cos A and explain why that value implies mA = 60°.
https://wca.sooschools.com/media/g_geo_ccss_2013/11/geo_10a_17_10_triangle.gif Answer by Fombitz(32388) (Show Source):
