Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ksaimouli

  • 3 years ago

solve for x cos^2x-sin^2x=sin x

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

    \[\cos^2x-\sin^2x =sinx\]

  2. eyust707
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I see trig... I see trig stuff squared... im thinkin trig identities right off the bat!

  3. terenzreignz
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    cox 2x comes to mind...

  4. terenzreignz
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    but it's useless, I think?

  5. eyust707
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no i like the thinking!

  6. terenzreignz
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    LOL, this is a quadratic equation in disguise

  7. terenzreignz
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    cos^2 x = 1 - sin^2 x right? so we can turn it into... 1 - sin^2 x - sin^2 x = sin x

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

    \[\cos^2x-\sin^2=1-2\sin^2x\]

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

    oops :P ditto

  10. terenzreignz
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Oh, you can do it from here? great :)

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

    I'm not the asker @ksaimouli can you take it from here?

  12. terenzreignz
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    derp, I forgot about that (sorry)

  13. 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