1. A vertical cliff is 38 m high and is observed from a boat, which is 52 m from the foot of the cliff. Calculate the angle of elevation of the top of the cliff from the boat.

2. John starts at a point O and walks 1.2 km, in the direction N 27° E, to the point A. He then turns to his right through 90° and walks 0.6 km to the point B. What is the bearing of B from O?