A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Write the following as an algebriac expression in "x" cot(arccos(3x)), 0 ≤ x ≤ 1/3

  • This Question is Closed
  1. misty1212
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    HI!!

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

    This problem makes my head hurt :( lol

  3. misty1212
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    this is really not that bad at all first step: draw a triangle with some angle \(\theta\) labelled next step, since \[\cos(\theta)=3x\] put a \(3x\) on the "adjacent" side and make the hypotenuse 1

  4. misty1212
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1434129152248:dw|

  5. misty1212
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    there is a picture of an angle whose cosine is \(3x\) what you need is the "opposite" side which you find via pythagoras

  6. misty1212
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    let me know what you get it should have a square root in it

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

    :o let me try

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

    sqrt(-9x^2 + 1) ?

  9. misty1212
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes although \[\sqrt{1-9x^2}\] looks neater

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

    haha alright

  11. misty1212
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now you want the cotangent of that angle, which is "adjacent over opposite" so you are pretty much done, just write it i

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

    Yeah I got it form here, you just made that so easy it's ridiculous. Thank you so much

  13. misty1212
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    it is ridiculously easy if you know what you are doing hope your head does not hurt anymore \[\color\magenta\heartsuit\]

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

    It's alleviated :)

  15. 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.