A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

Proving the following trig identities: sin^2 (x/2)= (csc x - cot x)/ (2 csc x) help please

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

    i get that (1-cosx)/2 = (csc x - cot x)/ (2 csc x) does it help ?

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

    you need to find the relation between (1-cosx)/2 and sin^2 (x/2)=

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

    thank you for explaining, this helps a lot :)

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

    you didn't forgot any square in sin^2 (x/2)= (csc x - cot x)/ (2 csc x) ?

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

    thank you i proved it with your help :)

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

    how did you do it :o ?

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

    The LHS is just (1/2) (1+ cos(x)), so it becomes cos(2a) = 1 - sin^2(a) (standard) with a = x/2

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

    1-cos(x) *** My bad

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

    I still don't get the last part :(

  10. 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.