Finding Momentum of a fragment after explosion

[Serendipitydo]

Homework Statement

A small explosive device slicing to the right breaks into two pieces. The momentum of fragment 1 after the explosion is 23kg.m/s 28°RCS

What is the momentum of fragment 2 after the explosion?

Homework Equations

PT=PT'
P=mv
Rx= Rcos∅
Ry= Rsin∅
R= √x²+y²

The Attempt at a Solution

This is all the information given. I haven't a clue at how to even begin with this one. We generally receive minimal instruction, and we haven't done a single problem like this one. Everything else was a stationary object exploding and we were given masses and velocities and times.

Do I break it down into x and y components and find out the momentum of the grey line, then use that, combined with the 21° (331°?RCS(no clue if that's right, seeing as he went out in left field the other day with the rcs)) to get the momentum of fragment 2? That's the only thing I can think of

 

[humanist rho]

Vertical component of momentm is also conserved.
Try to find the relation connecting sine components of the two pieces.

 

[genericusrnme]

I was just about to ask what a feynman diagram was doing in introductory physics, then I read the question :D

it's all conservation of momentum!