Solve the triangle.

b = 72°, b = 12, c = 8

Part 1)

Part 2)

Part 3)

Step-by-step explanation:

we know that

Applying the law of sines

In this problem we have

Step 1

Find the measure angle C

substitute the values and solve for C

Step 2

Find the measure of angle A

we know that

The sum of the internal angles of the triangle must be equal to degrees

so

we have

Step 3

Find the measure of side a

Applying the law of cosines

substitute