A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 4 years ago

Could I find the missing side lengths of a right triangle if I only know one side length and one angle measure?

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

    Yes

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

    But the angle measure has to be one of the other angles, not the right angle

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

    Can you gve me an example please?

  4. mathmate
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1327934480633:dw| If \( \theta = 25\) degrees, and c=20, then \( b=c\ sin(\theta) \) and \( a=c\ cos(\theta) \).

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

    im so confused with these ratios.

  6. mathmate
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Are these sin() cos() ratios new to you, or you have not done them yet?

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

    i just dont understand them. i know what they are, but how do i use them????

  8. mathmate
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The standard trigonometric ratios, referring to the figure: \( sin(\theta)=opposite/hypotenuse = b/c \) \( cos(\theta)=adjacent/hypotenuse = a/c \) \( tan(\theta)=opposite/adjacent = a/c \) Draw a diagram to which you can refer when you do these exercises. They are not easy to memorize, but when you will have done some exercises, they will sit in your memory automatically. Refer to your diagram often. Do not force yourself to memorize it because it will actually slow you down when you with them later on.

  9. mathmate
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    erratum: tan(θ)=opposite/adjacent=\(b/a\)

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

    o i just need to know how to apply the sin cos and tan ratios. Possibly the recipercals also.

  11. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Here is Khan's intro http://www.khanacademy.org/video/basic-trigonometry?playlist=Trigonometry (and the video following this one) and here is how to use trig functions http://www.khanacademy.org/video/using-trig-functions?playlist=Trigonometry

  12. mathmate
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The videos are excellent source of knowledge. You will find that it's worthwhile investing a few minutes on them.

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

    ok i can not veiw the in school, but i will soon thnks!

  14. mathmate
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1327938324698:dw| So here are the six ratios, including the reciprocals. Note that I have put the length of the hypotenuse as 1. If the hypotenuse were L, then the opposite side would be L sin(\(\theta\)) and the adjacent side would be L cos(\(\theta\)).

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

    omg those vids helped so flutterin much.

  16. 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.