CPM Homework Help : CCG Problem 7-85

Examine the triangles below. For each, solve for $x$ and name which tool you use. Show all work.

Hint (a):
What trig ratio can you use to solve for $x$ ?
Answer (a):
$x\approx10.73$ , tangent

Hint (b):
Find the measure of the unknown angle. Now what law can you use to solve for $x$ ?

Hint (c):
Use the Law of Cosines to solve for $x$ .
Answer (c):
$x\approx15.30$ , Law of Cosines