After taking off, a helicopter climbs in a straight line at a constant angle B. Its flight is tracked by radar from point A. Determine the speed of the helicopter in terms of d, B, p and p dot.
I know that in polar coordinates: v=r(p dot)
I know I need to get r in terms of d, B, p and p dot. I have been trying different geometry techniques but can't seem to get the answer. The answer is supposed to be:
[(p dot)d(sinB)] / [(sin^2(B-p)]
Please see attached file.
Because an exterior angle in a triangle is equal to ...
The solution discusses polar coordinates and how to find geometry shapes within them.