Please answer in full detail and write in paper pls. A revolving beacon is situated 3000 ft off a straight shore. If the beacon turns at 4π rad/min., how fast does the beam of the beacon sweep along the shore at: a) its nearest point. b) At a point 4800 feet from the nearest point.

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Chapter3: Additional Topics In Trigonometry
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Please answer in full detail and write in paper pls.

A revolving beacon is situated 3000 ft off a straight shore. If the beacon turns at 4π
rad/min., how fast does the beam of the beacon sweep along the shore at:
a) its nearest point.
b) At a point 4800 feet from the nearest point. 

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