A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

itsmichelle29

  • one year ago

Simplify root(1-sintheta)(1+sintheta)

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

    \[\sqrt{(1-sin{\theta})(1+sin{\theta})}\] ?

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

    Is that what you meant?

  3. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yup

  4. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ±sin θ cos θ ±tan θ square root sine theta

  5. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    those are the answerscan u help me

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

    \(\sqrt{(1-sin{\theta})(1+sin{\theta})}\) \(\sqrt{(1-sin^2{\theta })}\) But \(cos^2{\theta} + sin^2{\theta} = 1\), then \(\sqrt{cos^2{\theta}}\) \(\pm cos{\theta}\)

  7. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so would the answer be costheta only

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

    yes

  9. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    omg thank you can u help me with one more only

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

    sure^^

  11. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  12. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @M4thM1nd

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

    \(cos(x-\pi/2) = sin(x)\) and \(sin(x - \pi/2)=-cos(x)\)

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

    So, which one you think is the right answer?

  15. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1st one

  16. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i think ... idk

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

    No. From the graph we see that f(x) at x = 0 is 0, that means f(x) is some function of sin(x), since sin(x) at x = 0 is 0

  18. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so the answer is a

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

    In that case, the first one we have \(sin(x-\pi/2) = -cos(x)\), so that can't be the right answer

  20. itsmichelle29
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay the right answer is ...

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

    If we check the last option, we have \(cos(x-\pi/2) = sin(x)\), but from the graph we also get the information that f(x) at x = pi/2 is equal to -4. But sin(x) at x = pi/2 is equal to 1. That tells us that we need a -4 multiplying this sin(x). So... The last option is the correct answer

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

    do you understand?

  23. 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.