



 
Hi, In my diagram B is the bottom of the aerial, T is its top, P is the first surveyor position and Q is the second surveyor position. The distances are in metres. What trig function relates $x$ and $h$ to the measure of the angle $BPT?$ What trig function relates $y$ and $h$ to the measure of the angle $BQT?$ Now you have two equations but three unknowns, so you need another equation. Notice that angle $QPT$ is a right angle so triangle $QPT$ is a right triangle. Maybe Pythagoras can help. Penny  


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