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

luisz Group Title

what is the perimeter of triangle ABC?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. pitankar Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    sum of the three side's length.

    • 2 years ago
  2. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1347812022332:dw|

    • 2 years ago
  3. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    tips?

    • 2 years ago
  4. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    there is a 30-60-90 triangle, u know the property of this special triangle ??

    • 2 years ago
  5. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

    • 2 years ago
  6. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    but I know none of the sides

    • 2 years ago
  7. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    And I do not know the angles for the other triangle with sides

    • 2 years ago
  8. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I could assume that triangle ABC is a 30-60-90, right?

    • 2 years ago
  9. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    C=30 degrees

    • 2 years ago
  10. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    A=60 degrees

    • 2 years ago
  11. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    B=90 degrees?

    • 2 years ago
  12. pitankar Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    calculate the length of perpendicular from A to BC using Pythagoras theorem. then use trigonometry relations to calculate AC. rest you can get...

    • 2 years ago
  13. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    use pythagoras theorem to find the side...\|dw:1347812215548:dw|

    • 2 years ago
  14. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ahh

    • 2 years ago
  15. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    good ol' pythagorean theorem

    • 2 years ago
  16. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so we have a 9-12-15 right triangle

    • 2 years ago
  17. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    3-4-5?

    • 2 years ago
  18. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so the altitude becomes 12

    • 2 years ago
  19. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    now AD = 12 can u find all sides ?

    • 2 years ago
  20. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    30 degree side becomes 12 radical 3

    • 2 years ago
  21. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    AC equals 24

    • 2 years ago
  22. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    now

    • 2 years ago
  23. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    15+24=39

    • 2 years ago
  24. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    use pythagoras

    • 2 years ago
  25. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    39+9=48

    • 2 years ago
  26. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    48+12 radical 3?

    • 2 years ago
  27. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    is that really it?

    • 2 years ago
  28. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    No wonder this problem was so hard

    • 2 years ago
  29. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I never used pythagorean theorem

    • 2 years ago
  30. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    derp

    • 2 years ago
  31. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    u did this by yourself :)

    • 2 years ago
  32. chihiroasleaf Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    you have lots of geometry problem @luisz :p

    • 2 years ago
  33. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ty

    • 2 years ago
  34. luisz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I know

    • 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.