A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

briana.img

  • one year ago

How would I go about solving this problem? Right Triangles and Trigonometry: Law of Sines and Law of Cosines

  • This Question is Closed
  1. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

  2. dan815
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1436489997103:dw|

  3. dan815
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    use law of cosine

  4. dan815
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    if its a right triangle then the side would be 12^2+5^2 =13^2 however the angle opposite the misisng side is 41 which is more than 30 degrees and if it was 30 degrees the missing side would be 7.5 so we know for 41 degreees the missing side ha to be greater than that, so its definately not a right triangle, so we have to use law of COSine

  5. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @dan815 i used law of cosine and came out with the answer of 13.9737

  6. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @jim_thompson5910 plz help

  7. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Law of cosines c^2 = a^2 + b^2 - 2*a*b*cos(C) c^2 = 12^2+13^2-2*12*13*cos(41) c = ???

  8. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @jim_thompson5910 13.9737 ???

  9. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    12^2+13^2-2*12*13*cos(41) = 77.5306109704951 sqrt(77.5306109704951) = 8.80514684548163

  10. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    not sure how you got 13.9737

  11. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @jim_thompson5910 so how would i go about for the other angles??

  12. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    by using the law of sines

  13. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sin(A)/a = sin(B)/b = sin(C)/c

  14. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.