Question

Another related rates problem.

Answer 1

A kite 75ft above the ground moves horizontally at a speed of 6ft/s. At what rate is the angle between the string and the horizontal decreasing when 200ft of string has been let out?

Answer 2

@UnknownRandom so far, so good

Answer 3

but that will come later, for now, let's say that the horizontal side is unknown and we'll call it x

Answer 4

"moves horizontally at a speed of 6ft/s"

means dx/dt = 6

Answer 5

how can we tie together the 75, the x and the \(\Large \theta\) ? which trig function can we use?