Hi. Let's not let me show all work. Instead, I will walk through the problem.
First look at your triangle. You need to have the right labels for known values (given forces, component forces, and angles). It does not matter whether we will use all of them of not (one or two may not applicable, who knows).
This assumes that you other than the given forces should have 1) horizontal component due to gravity 2) vertical component due to gravity
Let us remember there are two different energy of conversations (actually they are the same equation). The reason I said two are not to confuse you at this point, and not to draw the attention.
If there is no friction involves, we say the system should have energy conserved by
Kf + Uf = Ki + Ui
K is the the kinetic and U is the potential energy
If friction presents, we no longer have a conserved equation, that is
changes of K + changes of U = changes of mechanical energy = - Ff * d
Which in general, is the same form as the first equation. When there is no friction or any nonconservative force presents, we can move some terms over the other side.
Look at your picture again. What do you need for your equations?
Use those components.
Hint and tips: don't worry about the answer yet. I want you to develop the concept before actually finding the right answer (if you fail to do it this time).
Ps: I suggested you make a triangle and attach it (screenshot it, or whatever method...) here if you can't find the right answer after your second attempt
