A man in a Boat running away from a Lighthouse 150 M high takes 2 min to change the angle of elevation of the top of the Lighthouse from 60 degree to 45 degree find the speed of the boat
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The speed of boat =31.69m/s ~ 32m/s
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The distance traveled by the boat at 60° = 50√3
" " " " " " " 45° = 150
The distance travelled between 45° and 60° = (1/30) x, where x = speed of boat
150 - 50√3 = x/30
Speed of boat = 30( 150 - 50√3 )
" " " " " " " 45° = 150
The distance travelled between 45° and 60° = (1/30) x, where x = speed of boat
150 - 50√3 = x/30
Speed of boat = 30( 150 - 50√3 )
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