Question

Decide which formula to use and solve the triangle , round your answer to the nearest tenth, where necessary.

Answer 1

HI,

Explanation:

`m\angle{A}=180^o-70^o-80^o=30^o\\\\Using\ law\ of\ sines:\\\\(sin(C))/(AB) =(sin(B))/(AC) \Longrightarrow\ AC=(sin(70^o)*17.5)/(sin(80^o)) =16.698305...\approx{16.7}(cm)\\\\(sin(C))/(AB) =(sin(A))/(BC) \Longrightarrow\ BC=(sin(30^o)*17.5)/(sin(80^o)) =8.88498285...\approx{8.9}(cm)\\`