Question

Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree. a = 7, b = 7, c = 5

A. A = 70°, B = 70°, C = 40°
B. A = 69°, B = 69°, C = 42°
C. A = 42°, B = 69°, C = 69°
D. A = 69°, B = 42°, C = 69

Answer 1

Since all you have is side lengths, use the law of cosines to find one angle.
Then you can use the law of sines to find the next angle.
Then you can subtract the two angles from 180 to find the third angle.

Answer 2

thank you