Anyone care to help me?

Asingle die is rolled twice. find the probability of rolling a 3 the first time and a 2 the second time

An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).

What is the measure of angle a and angle c ?