Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

jenny15

  • 3 years ago

how to prove (sin^3x)(1+cos^2x)=sin

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

    http://www.sosmath.com/trig/Trig5/trig5/trig5.html

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

    \[(\sin^3x)(1+\cos^2x)=\sin x\]\[(1+\cos^2x)={\sin x \over \sin^3x}\]\[(1+\cos^2x)={1 \over \sin^2x}\]

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

    You may have posted it incorrectly. I don't believe it is true. For example, substitute pi/6 for x and you will get: 1/8(1+3/4)=1/2. Clearly not true.

  4. 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