Chapter 11.4, Problem 1E

In Exercises 1 and 2, use the given information to find an expression for the area of $\Delta ABC$ . Give the answer in a form such as $A=\frac{1}{2}\left(3\right)\left(4\right){\text{ sin 32}}^{\circ }$ . See the figure for Exercises 1 to 8.

a) $a=5,b=6,\text{ and }\gamma ={78}^{\circ }$

b) $a=5,b=7,\alpha ={36}^{\circ }\text{ and }\beta ={88}^{\circ }$

Exercises 1-8