Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

philip

For problem set 4, Question 2C-10. I keep getting cos(alpha)/cos(beta) = 5/2 instead of sin(alpha)/sin(beta) = 5/2 at the last step. What am I missing?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. Arbiter
    Best Response
    You've already chosen the best response.
    Medals 1

    Your answer is correct. In the problem description you are asked to look at the angles that the swimmer's path makes with the horizontal. If you look up Snell's Law on wikipedia you'll see that they examine the angles that the path makes with the vertical instead. So, in short, the answer key is wrong. Because you are looking at the horizontal angle, you should get cos(alpha)/cos(beta) = 5/2.

    • 2 years ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.