I don't understand what to do. Please help

I Dont Understand What To Do Please Help class=
I Dont Understand What To Do Please Help class=

Answer :

For 3 the sides are going to be equal since the angles are equal, I’ll explain the comments

Answer:

5.

x=20√3

y=10√3

6.

x=2√10

y=4√5

Step-by-step explanation: