Solve the following question given below:

Question: At a wild-west show, a marksman fires a bullet at a12 g coin that's thrown straight up into the air. The marksman points his rifle at a 45 degree angle above the ground, then fires a 15 g bullet at a speed of560m/s . Just as the coin reaches its highest point, the bullet hits it and glances off, giving the coin an exactly vertical upward velocity of140m/s.

Question I: At what angle measured with respect to the horizontal does the bullet ricochet away from this collision?

I am not able to get the correct answer for above question please help me.