A man on a cliff observes a boat at an angle of depression of 30°30° that is approaching a point on the shore directly below him. The boat moves with a uniform speed. After 92seconds , the angle of depression of the boat is 60°. Find the total time taken by the boat to reach the shore.
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A man on a cliff observes a boat at an angle of depression of 30° which is approaching the shore to the point immediately beneath the observer with a uniform speed. Six minutes later, the angle of depression of the boat is found to be 60°.
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The other interpretation of the question would be that given that the sum of the masses of 4 apples is 1 kg, how many grams is each individual apple? In that case, there’s insufficient information to know the mass of each apple.
The mean mass would obviously be 1/4 kg, but that’s just the mean. It could be that the masses are 10 g, 10 g, 10 g, or 970 g, or 100 g, 200 g, 300 g, 400 g — there’s simply not enough information to answer.
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