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mojones710 mojones710
  • 25-02-2017
  • Mathematics
Answered

a street light is mounted at the top of a 15 ft-tall pole. A man 6 ft tall walks away from the pole with a speed of 5 ft/s along a straight path. How fast is the tip of his shadow moving when he is 40 ft from the pole

Verified Answer :

jtvatsim
jtvatsim jtvatsim
  • 25-02-2017

See attached. The trick is to use similar triangles.

View image jtvatsim
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