1.

A man, 2m tall, walks at the rate of 1(2)/(3) m/s towards a street light which is 5(1)/(3) m above the ground. At what rate is the tip of his shadow moving and at what rate is the length of the shadow changing when he is 3(1)/(3)m from the base of the light ?

Answer»


ANSWER :`(DX)/(DT)=-1`


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