Rays  and  have coordinates 31 and 150, as indicated, relative to coordinates in H1 and H2...

Rays  and  have coordinates 31 and 150, as indicated, relative to coordinates in H1 and H2, respectively, with N-A-M.

(a) Find m∠EAF.

(b) Which of the rays  or  lies between  and ? (No proofs necessary.)