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sabika13

  • 3 years ago

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

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  1. jatinbansalhot
    • 3 years ago
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    even i'm waiting for someone to answer your question... eager to know ...

  2. jatinbansalhot
    • 3 years ago
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    sabika only sin x is underroot or whole?

  3. sabika13
    • 3 years ago
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    sqrt2sinx ***

  4. jatinbansalhot
    • 3 years ago
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    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
    • 3 years ago
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    @sabika13 check my answer... i think i am so right.... tell me

  6. sabika13
    • 3 years ago
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    sorry it was sqrt 2 sinx

  7. jatinbansalhot
    • 3 years ago
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    1st time in my life i had tried such trig equ omg omg.... :( :(

  8. rizwan_uet
    • 3 years ago
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    sqrt 2sinx + tanx = 0 sqrt 2sinx = -tanx squaring both sides we get 2sinx = tan^2x 2 = sinx/cos^2x

  9. jatinbansalhot
    • 3 years ago
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    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
    • 3 years ago
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    @rizwan_uet can you keep going or are you stuck? @jatinbansalhot its sqrt2sinx

  11. rizwan_uet
    • 3 years ago
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    2cos*2x=sinx 2(1-sin^2x) = sinx 2-2sin^x -sinx = 0 sinx(-2sinx -1) = -2

  12. rizwan_uet
    • 3 years ago
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    i m trying......

  13. sabika13
    • 3 years ago
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    -2sin^2x-sinx +2 = 0 is good! thanks!!

  14. rizwan_uet
    • 3 years ago
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    its right or not???

  15. jatinbansalhot
    • 3 years ago
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    hhahahahaahahahahahahha... i'm not going to solve her problem... she is not clear...

  16. sabika13
    • 3 years ago
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    ? i dont know if its right.. thats why im asking a question..

  17. rizwan_uet
    • 3 years ago
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    up to this point i did my best but the rest is difficuilt for me sorry..

  18. jatinbansalhot
    • 3 years ago
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    x = pi / 4, -pi / 4 .... m i right

  19. matricked
    • 3 years ago
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    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
    • 3 years ago
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    how did you go from 2sinx=tan^2x to sinx(2-sinx/cos^2x0 =0 ?

  21. matricked
    • 3 years ago
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    use tanx=sinx/cosx

  22. sabika13
    • 3 years ago
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    yeah so sin^2x/cos^2x =2sinx 2sinxcos^2x=sinx^2 2sinx(1-sin^2x)=sin^2x ... am i doing it right?

  23. jatinbansalhot
    • 3 years ago
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    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
    • 3 years ago
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    @sabika13 did my work help u? i want to know ..... do tell me

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