Horizontal distance and line of sight

The top \(T\) of a vertical cliff is \(45\) m above a level sea surface. A boat at \(P\) is seen from \(T\) at an angle of depression of \(28^\circ\). Point \(B\) is vertically below \(T\) on the sea surface.

1. Calculate the horizontal distance \(PB\).[2]
2. Calculate the line-of-sight distance \(PT\).[2]

Give both answers correct to 3 significant figures.