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

highschoolmom2010

using Sin, Cos, Tan For parts (a)–(c), find the value of w to the nearest tenth

  • 8 months ago
  • 8 months ago

  • This Question is Closed
  1. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    • 8 months ago
    1 Attachment
  2. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    familiar wid SOH-CAH-TOA ?

    • 8 months ago
  3. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    you are zipping along... now learning trig ?

    • 8 months ago
  4. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    when you get time (if you want to see more info) http://www.khanacademy.org/math/trigonometry/basic-trigonometry/basic_trig_ratios/v/basic-trigonometry

    • 8 months ago
  5. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    not really understand but @phi that is in my lessons for geometry

    • 8 months ago
  6. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah usually they put trig ratios right after similar triangles

    • 8 months ago
  7. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    i can kinda do it not really well yet

    • 8 months ago
  8. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    khan explains it better than trying to learn it from reading explanations here. This site is better for going over your problems

    • 8 months ago
  9. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    ok ok so watch his videos first :D

    • 8 months ago
  10. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1375894551709:dw| doesnt really show how to do this @ganeshie8

    • 8 months ago
  11. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    first go to the 54 degree corner and stare at the triangle from there

    • 8 months ago
  12. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1375895636780:dw|

    • 8 months ago
  13. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1375895683012:dw|

    • 8 months ago
  14. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    thats opposite side eh ?

    • 8 months ago
  15. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    yes thats the opposite

    • 8 months ago
  16. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    wat about 17, wat is it

    • 8 months ago
  17. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    Here is khan working this type of problem http://www.khanacademy.org/math/trigonometry/basic-trigonometry/basic_trig_ratios/v/example--trig-to-solve-the-sides-and-angles-of-a-right-triangle

    • 8 months ago
  18. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    the hypotenuse is opposite the 90º angle. 17 in (a) is the hypotenuse

    • 8 months ago
  19. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    idk what i was thinking it is hyp,

    • 8 months ago
  20. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    this is really confusing

    • 8 months ago
  21. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    @phi i think i got it |dw:1375975866022:dw| \[\sin 54=\frac{ w }{ 17 }\] \[17*\sin 54=\frac{ w }{ 17 }*17\] \[17\sin54=W\] \[W \approx13.8\]

    • 8 months ago
  22. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    yes.

    • 8 months ago
  23. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    ok now can yall check my b and c part when i get the posted

    • 8 months ago
  24. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    yea sure. remember this - hypotenuse is the longest side. it wont change no matter which corner u go

    • 8 months ago
  25. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    once you get the idea and stay focused (don't make a dumb mistake) and you know how to work a calculator this stuff is not hard.

    • 8 months ago
  26. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1375976336846:dw| this one i get mixed up \[\tan \frac{ 1.0 }{ W }\] \[W* \tan 28=\frac{ 1.0 }{ W }*W\] \[W \tan 28=1.0\] im unsure of how to do that

    • 8 months ago
  27. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    remember that tan(28) is some (ugly) number which a calculator will know. divide both sides by tan(28)

    • 8 months ago
  28. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    you get w= 1/tan(28)

    • 8 months ago
  29. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    but when i plug in 1/tan(28) the calculator gave me this -3.55328644813

    • 8 months ago
  30. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    your calculator is in "radian mode" you want to be in degree mode

    • 8 months ago
  31. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 0

    change the mode to degrees

    • 8 months ago
  32. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    ohh ok

    • 8 months ago
  33. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    1.88

    • 8 months ago
  34. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    so approx 1.9

    • 8 months ago
  35. phi
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

    • 8 months ago
  36. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    horray ok and for the last pne

    • 8 months ago
  37. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1375977256082:dw| \[\cos(33)=\frac{ w }{ 4.5 }\] \[4.5*\cos(33)=\frac{ w }{ 4.5 }*4.5\] \[4.5\cos(33)=W\] \[W \approx3.8\]

    • 8 months ago
  38. highschoolmom2010
    Best Response
    You've already chosen the best response.
    Medals 1

    ty @phi & @ganeshie8 for the help

    • 8 months 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.