An observer in a helicopter 250 m above ground notes that the angle of the depression of the top of the tree is 18 degrees. Tree height is 12 m. How far from directly below the helicopter is the tree??

How do I figure this out with trig ratios.

Explain, so I can see what is done.

Thanks

Joanne

I can't figure out how the picture of this would look like. is the helicopter above the tree??? and if so, how do you figure out the height?? I am lost on this one. thanks