Continuation to Law of sines/ Law of cosines

Today in class we had done Mental Math (MM) like usual. Once done we had gone on to finishing the notes from yesterday about the Law of Sines and we continued to the Law of Cosines. The image below is Law of Sine.

Law of Sines

Now as shown in the picture the angle of Q which is 53 degrees is given but the angle of P and R is not shown. As for the sides of the triangle, side (p) is shown as 380 yards and (q) as 400 yards but side r is not shown. Now when doing the question you mush do as shown in the next image.