12.A pilot wishes to fly from Toronto to Montreal, a distance of 508 km on a bearing of 075^o. The cruising speed of the plane is 550 km/h. An 80 km/h wind is blowing on a bearing of 125^o

a)What heading should the pilot take to reach his destination?

b)What will be the speed of the plane relative to the ground?

c)How long will the trip take?

I do not know how to get the angle the pilot should take. I don't understand how to do it. I know there is a little angle of 15^o, however, can't find the angle in the triangle to add to the little angle then subtract it from 90^o. I know this is easy, however, can't seem find the method to find the bearing.

NOTE: All angles are from true North [up] and then rotate clockwise.