November 30, 2009
(CHAIN RULE APPLICATION) How fast is the beam of light moving along the shoreline when it is 1 km from P?
Geraldo asked:
A lighthouse is located on a small island, 3 km away from the nearest point P on a straight shoreline, and its light makes four revolutions per minute. How fast is the beam of light moving along the shoreline when it is 1 km from P?
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A lighthouse is located on a small island, 3 km away from the nearest point P on a straight shoreline, and its light makes four revolutions per minute. How fast is the beam of light moving along the shoreline when it is 1 km from P?
Create a video blog
Filed under Lighthouses by admin
Comments on (CHAIN RULE APPLICATION) How fast is the beam of light moving along the shoreline when it is 1 km from P? »
The distance from and be the light makes tan x3 sec ddt 13 arctan13 sec ddt revolutions per minute radiansmin when tan 13 dxdt 24 19 643 kmmin.