Chapter 11.4, Problem 4E

In Exercises 3 and 4, state the form of the Law of Sines used to solve the problem. Give the answer in a form such as $\frac{\sin {72}^{\circ }}{6.3}=\frac{\sin {55}^{\circ }}{a}$

a) Find $\beta$ if it is known that $b=8.1,c=8.4,\text{ and }\gamma ={86}^{\circ }.$

b) Find c if it is known that $a=5.3\alpha ={40}^{\circ },\text{ and }\beta {\text{=80}}^{\circ }$

Exercises 1-8