Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

aussy123

  • 3 years ago

x = -135, cos 2x = 1 - 2 sin2x True False I think its true, but when I was using the unit circle, I couldnt find -135

  • This Question is Closed
  1. aussy123
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Chlorophyll can you help me, please?

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

    hi friend, your problem is \[\cos 2x = 1 - 2 \sin^2 x ?\]

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

    if mine is right, so, the answer is true. if yours is right, the answer is false. why? because we have a formula for that trig: it's mine. it's true with any value of x. Hope this helps

  4. aussy123
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thanks you, I was having a big problem with this, and I moved to the next questions. Thank YOU SO MUCH!

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

    thanks for your medal.

  6. 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