A kite 50ft above the ground moves horizontally at a speed of 8ft/s. At what rate is the angle between the string and the horizontal decreasing when 300ft of string has been let out?

Question

anonymous · Answer

d = r •t
t = d / r
r = d / t

Hope this helps, because these are the formulas.

anonymous · Answer

still dont get how to set up the equation

anonymous · Answer

300ft is the distance. and 8ft/s is the time, right?

anonymous · Answer

correct

anonymous · Answer

So, use r = d / t.

anonymous · Answer

300 / 8 = 37.5

p0sitr0n · Answer

derivate
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$$\cos \alpha = \sqrt{a^2-b^2} / a $$