Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

sabika13

  • 2 years ago

solve for x in the given interval sqrt2sinx+tanx=0 (-pi,pi)

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

    even i'm waiting for someone to answer your question... eager to know ...

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

    sabika only sin x is underroot or whole?

  3. sabika13
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sqrt2sinx ***

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

    sqrsinx + tanx = 0 sqrsinx = - tanx sinx = tan^2x squaring both sides 1 = 1/cosx dividing both sides by sinx cosx = 1 crossmultiplying x = 0 i am not sure ... .. but i just tried i am also learning trigonometry

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

    @sabika13 check my answer... i think i am so right.... tell me

  6. sabika13
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sorry it was sqrt 2 sinx

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

    1st time in my life i had tried such trig equ omg omg.... :( :(

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

    sqrt 2sinx + tanx = 0 sqrt 2sinx = -tanx squaring both sides we get 2sinx = tan^2x 2 = sinx/cos^2x

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

    sabika, before ppl can help you, they need to understand your question clearly. even now your question is vague... not clear..... is it sqrt2(sin x ) or sqrt(2sin x ) ?

  10. sabika13
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @rizwan_uet can you keep going or are you stuck? @jatinbansalhot its sqrt2sinx

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

    2cos*2x=sinx 2(1-sin^2x) = sinx 2-2sin^x -sinx = 0 sinx(-2sinx -1) = -2

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

    i m trying......

  13. sabika13
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -2sin^2x-sinx +2 = 0 is good! thanks!!

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

    its right or not???

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

    hhahahahaahahahahahahha... i'm not going to solve her problem... she is not clear...

  16. sabika13
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ? i dont know if its right.. thats why im asking a question..

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

    up to this point i did my best but the rest is difficuilt for me sorry..

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

    x = pi / 4, -pi / 4 .... m i right

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

    sqrt 2sinx + tanx = 0 sqrt 2sinx = -tanx after squaring both sides we get 2sinx = tan^2x or sinx(2-sinx/(cos^2x))=0 then sinx=0 or x=0,pi,-pi (one part ) the other part may can be obtained from (2-sinx/(cos^2x))=0

  20. sabika13
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    how did you go from 2sinx=tan^2x to sinx(2-sinx/cos^2x0 =0 ?

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

    use tanx=sinx/cosx

  22. sabika13
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah so sin^2x/cos^2x =2sinx 2sinxcos^2x=sinx^2 2sinx(1-sin^2x)=sin^2x ... am i doing it right?

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

    2sinx cos^2x = sin^2x i have taken this statement from you 2sinx ( 1 - sin^2 ) = sin^2x 2sinx - 2sin^3 =sin^2x 2sinx - 2sin^3 - sin^2x = 0 2sin^3 + sin^2x - 2sinx = 0 sinx( 2sin^2 + sinx - 2 ) = 0

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

    @sabika13 did my work help u? i want to know ..... do tell me

  25. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.