Question

Geometry: 6.7_law_of_cosines: 15 Points

Answer 1

52.61 degrees to the nearest hundredth.

Explanation:

8^2 = 7^2 + 10^2 - 2.10.7cos A

cos A = (8^2 - 7^2 - 10^2) / (-140)

= -85/-140

= 0.60714

< A = 52.61 degrees.