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kulangman is in level flight 6km abave the ground. his level flight take him directly over the PETRONAS tower,pt. how fast is he flying when the distance between him and the PT is exactly 10km and this distance is increasing at the rate of 40km/h.
11 years ago

Answers

Steve
Draw a diagram.
d^2 = x^2+6^2
2d dd/dt = 2x dx/dt
When d=10, x=8

Now plug in your values.
11 years ago

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