Question

If c= 12.6 and a= 9.2 find B Solve the problem, round to the nearest tenth if necessary.

Answer 1

`\begin{gathered} \cos B=(a)/(c) \\ \cos B=(9.2)/(12.6) \\ B=\cos ^(-1)(9.2)/(12.6) \\ B=43 \end{gathered}`

answer: B = 43°