As observed from the top of a Lighthouse 100m above sea level the angle of depression of the ship sailing directly towards it changes from 30 degree to 45 degree determine the speed travel sorry sorry as observed from the top of a Lighthouse 100m above sea level the angle of depression of a ship sailing directly towards it changes from 30 degree to 45 degree determine the distance travelled by the ship during the period of observation
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this is a question of height and distance
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