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postnew [5]
3 years ago
9

A river is 500 meters wide and has a current of 1 kilometer per hour. if tom can swim at a rate of 2 kilometers per hour at what

angle to the shore should he swim if he wishes to cross the river to a point directly opposite bank
Mathematics
1 answer:
seraphim [82]3 years ago
5 0

Answer:

63.44^{0}

Step-by-step explanation:

Tom's resultant speed is calculated as \sqrt{1^{2}+2^{2}  }

= \sqrt{5}

The distance tom swim is the hypotenuse of the right angle triangle.

sin = opposite/hypotenuse = \frac{1}{\sqrt{5} }  = 1/5 = 0.2

arcsin (0.2) = 26.56^{0}

upstream angle =

90^{0} - 26.56^{0} =

63.44^{0}

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