A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

BloomLocke367

  • one year ago

last question for this unit.

  • This Question is Closed
  1. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @geerky42 In triangle XYZ, XY=13. YZ=20, and XZ=25. What is the measure of angle Z?

  2. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1433265703262:dw|

  3. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Use law of cosines here.

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

    law of cosine? it's not a right triangle c^2 = a^2 + b^2 -2abcosC

  5. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    soooo which is what part?

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

    |dw:1433265930207:dw|

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

    |dw:1433265972665:dw| opposite sides

  8. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so 169=400+625-2(20)(25)cos(C)

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

    yep looks right

  10. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    169=1025-1000cosC

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

    yep right

  12. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    and now I have to isolate C, right?

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

    yep right cos C

  14. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    soooo 1000cosC+169=1025 1000cosC=846 cosC=846/1000 C=arccos(846/1000), right?

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

    mhm first you have to subtract 1025

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

    well nvm it's 856 right ?

  17. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I did it a different way, but does it end up being the same?

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

    1025 - 169 = ?

  19. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    856

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

    Yep right it's 856/1000

  21. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so I got 32.22

  22. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that's not an option.... O.O

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

    i didn't get 32

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

    tryy again

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

    it's not 846

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

    \(\color{blue}{\text{Originally Posted by}}\) @BloomLocke367 soooo 1000cosC+169=1025 1000cosC=846 cosC=846/1000 C=arccos(846/1000), right? \(\color{blue}{\text{End of Quote}}\) 1025-169 = 856 not 846

  27. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    dang ittttt I keep doing that today.. writing stuff down wrong.

  28. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    sorry.

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

    it's okay

  30. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I got ~31

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

    yep

  32. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Can you check something for me? just check that my reasoning is correct?

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

    okie

  34. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    nevermind. I got it, don't worry about it

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

    mhmm idunno area stuff but 30-6-90 triangle ....make sense that's right i guess looks right

  36. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks

  37. 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.