Answer:
3 = x
Explanation:
Well, the two unknown sides share the same size due to the same angle, so now, using the fact we only have the info about one side, we need to do a reverse pythagorean theorem.

Our a and b are the same, so I will change them to "x" and combine them.

Now we plug in our "c" and square it ("C" in this case is:
)


3 = x