anonymous
  • anonymous
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?
Mathematics
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anonymous
  • anonymous
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?
Mathematics
katieb
  • katieb
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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radar
  • radar
Doesn't the problem state that Mr. Salmon is swimming upstream at 6 mph?
anonymous
  • anonymous
do I just subtract then?
radar
  • radar
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!

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anonymous
  • anonymous
ok worth a try thank you!

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