a boy wants to cross the river in a such a way so that he could reach exactly at the opposite point B from where he started the angle that we should make from the line ab
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Answer:
angle (x°) = sin^-1 (velocity of the river/velocity of boy in still water)
Explanation:
Drift =0
so, sin x° = (velocity of the river/velocity of boy in still water)
x ° =sin^-1 ( velocity of the river /velocity of boy in still water)
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