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anonymous

  • 5 years ago

During one part of its migration, a salmon is swimming upstream at 6 mph. The current is flowing downstream at 3 mph at an angle of 7°. How fast is the salmon moving upstream?

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  1. radar
    • 5 years ago
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    Doesn't the problem state that Mr. Salmon is swimming upstream at 6 mph?

  2. anonymous
    • 5 years ago
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    do I just subtract then?

  3. radar
    • 5 years ago
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    I guess they want you to solve the rate he is moving with respect to land. So you would subtract, but not the total 3 mph since it is at an angle of 7 degrees rather than 0 degree (in direct opposition. I am guessing that you use cosine 7 degrees as a factor multiplying the three mph and subtracting the results. Just a SWAG!

  4. anonymous
    • 5 years ago
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    ok worth a try thank you!

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