A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

*WILL MEDAL IF YOU CAN ANSWER!* *TRIGONOMETRY* In ΔABC, m∠B = 90°, cosC=11/17, and AB = 26 units. Based on this information, m∠A=(33,40,50)°, m∠C=(33,40,50)°, and AC=(10,22,34) units.

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

    what's the question ???

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

    The numbers in parentheses are the options.

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

    ohhh ok gimme a sec

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

    Thank you. <3

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

    oh man i gtg im sorry D:

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

    Dang.

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

    you should tag other ppl in this question so they can find it

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

    good luck till !!!

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

    @wolf1728

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

    @misssunshinexxoxo

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

    @zepdrix

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

    @Vocaloid

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

    one approach do a sketch using the "draw" and label what is given

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

    use cosine rule c^2 = a^2 + b^2 - 2 a b Cos C

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

    wait even easier <B = 90

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

    |dw:1435346309809:dw|

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

    I do not entirely understand.

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

    ok using pythagorean theorem find AB the hypotenuse is the longest side of the right triangle so if given AB = 26 then you know AC is a multiple of 17 the factor will be same as 26 divided by what you calculated

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

    I am sorry, but I am absolutely horrible at trig, so I never understand this..

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

    I wanna say it's 33, 50, and 22.

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

    you can only get better if you think positive

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

    given the cos of the angle find the angle

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

    @TheSmartOne

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

    this is a right angle triangle right angle at B given cos = adjacent/ hypotenuse 11/17 find inverse cos to get the angle angles in a triangle add up to 180 B = 90 <A + <C = 90

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

    So A and C have to add up to equal 90?

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

    Or...

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

    yes

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

    did you find <C?

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

    So A should be 40 and C should be 50? Or vise versa?

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

    Cos is given find inverse Cos to get C

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

    now do you see C = 50?

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

    So C is 50? and A would be 40?

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

    yes more important do you understand?

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

    Kind of.

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

    But what about the unit length?

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

    what question do you have so I can review to make it clear

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

    I don't know where to begin.. I just don't understand Sin Tan and Cos

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

    ok look at the diagram pythagorean theorem do you see that AB = square root of (17^2 - 11^2 )?

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

    Yes.

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

    calculate and round so you get 13

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

    given that AB is 26 then there is a factor of 26/13 = 2

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

    But what about AC?

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

    AC given = 17 there is a factor of 2 so the length of AC is 2*17 =

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

    34.

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

    when there is a scale factor it applies to all lengths in the figure

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

    |dw:1435347818110:dw|

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

    Okay, I understand now.. kinda. Thank you!

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

    do you have any questions?

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

    Nope, that's all I needed. :)

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

    ok

  51. 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.