Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Yahoo! Group Title

Find x^2 + y^2+ z^2 - 4xyz if \[\sin ^{-1}x+\sin ^{-1} y+\sin ^{-1}z = \frac{ 3\Pi }{ 2 }\]?

  • one year ago
  • one year ago

  • This Question is Closed
  1. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    hint : max value of sin^-1 x ?

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

    ye sawal kaha se liya hai

    • one year ago
  3. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    arre,,arent you getting the catch ? that was a great thing acc to me,,whats the max value of xin^-1 x? o.O

    • one year ago
  4. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    great hint* :P

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

    u mean max value of sinx-1 or sinx

    • one year ago
  6. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    sin^-1

    • one year ago
  7. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    inverse

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

    pi/2 + pi/2 +pi/2 do u mean that

    • one year ago
  9. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    yep..the only possible ans..

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

    hmm i don't think so

    • one year ago
  11. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    really,,what makes you argue ?

    • one year ago
  12. Fazeelayaz Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    try that formula sin-1x + sin-1y=sin-1(x(1-y^2)^1/2+y(1-x^2)^1/2)

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

    bring sins into one form like sin-1(.....)=3pi/2

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

    ok u are may be right

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

    i was just trying to confirm it

    • one year ago
  16. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    ofcorse am right,, suppose i ask you sinx +siny + sinz =3, then ofcorse its possible when all are =1

    • one year ago
  17. shubhamsrg Group Title
    Best Response
    You've already chosen the best response.
    Medals 7

    same with this case.. hence x=y=z =1

    • one year ago
  18. Yahoo! Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @shubhamsrg Why Did u Take sin as Maximum ? Sorry My Connection was Out Of Order :)

    • one year ago
  19. Yahoo! Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @satellite73 @RadEn

    • one year ago
  20. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @shubhamsrg provided you with the answer

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

    i go with @shubhamsrg\[\sin ^{-1}x+\sin ^{-1} y+\sin ^{-1}z \le \frac{ 3\pi }{ 2 }\]equality occurs when\[\sin ^{-1}x=\sin ^{-1} y=\sin ^{-1}z = \frac{\pi }{ 2 }\]

    • one year ago
  22. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    you have \[\sin^{-1}(x)+\sin^{-1}(y)+\sin^{-1}(z)=\frac{3\pi}{2}\] but the the very largest \(\sin^{-1}(x)\) can be is \(\frac{\pi}{2}\) so they must each be \(\frac{\pi}{2}\), otherwise they cannot add to \(\frac{3\pi}{2}\)

    • one year ago
    • Attachments:

See more questions >>>

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.