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To find: The distance downstream to which the swimmer will reach from the point directly across the river from the starting point.
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Answer to Problem 111RE
The swimmer is
Explanation of Solution
Given:
The speed of the swimmer is
The speed of the current is
The width of the river is
Calculation:
Consider the diagram for the given condition is shown in Figure 1
Figure 1
Here, the speed of the swimmer is
Then, by Pythagoras theorem, the hypotenuse is,
The time taken by the swimmer to swim across the river is,
The total distance covered by the swimmer from the point directly across the river is,
Thus, the swimmer is
Chapter 9 Solutions
Precalculus
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