Application of DerivativeHard
Question
A kite is 300 m high and there are 500 m of cord out. If the wind moves the kite horizontally at the rate of 5 km/hr. directly away from the person who is flying it, find the rate at which the cord is being paid?
Options
A.4
B.8
C.3
D.cannot be determined
Solution
From figure z2 = x2 + y2
z
If z = 500 then x = 400
⇒ 500
= 400(5)⇒
= 4Create a free account to view solution
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