A Navy captain going away from a lighthouse at the speed of 4[(73) -1] m/s. He observes that it takes him 1 minute to change the angle of elevation of the top of the lighthouse from 60 to 45 . What is the height (in meters) of the lighthouse?

A Navy captain going away from a lighthouse at the speed of 4[(73) -1]

1.	A Navy captain going away from a lighthouse at the speed of 4[(73) -1] m/s. He observes that it takes him 1 minute to change the angle of elevation of the top of the lighthouse from 60 to 45 . What is the height (in meters) of the lighthouse?
A.	360 3
B.	280 2
C.	240 3
D.	480[( 3)-1]
Answer» D. 480[( 3)-1]

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A Navy captain going away from a lighthouse at the speed of 4[(73) -1] m/s. He observes that it takes him 1 minute to change the angle of elevation of the top of the lighthouse from 60 to 45 . What is the height (in meters) of the lighthouse?

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