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Homework Help: Is sin^2x and (sinx)^2 the same?

  1. Nov 3, 2005 #1
    In my calculus class, my teacher is using sin^2x

    I never saw anything like that.. Is it the same as (sinx)^2?

    Thanks
     
  2. jcsd
  3. Nov 3, 2005 #2

    Pyrrhus

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    Homework Helper

    If you mean

    [tex] \sin^{2} x = (\sin x)^{2} [/tex]

    yes it's the same!
     
  4. Nov 3, 2005 #3
    Ok, thanks a lot!

    So, sin^2(x) = (sinx)^2 = sinx*sinx?
     
  5. Nov 3, 2005 #4
    Yes!

    I have to extend the message.
     
  6. Nov 3, 2005 #5
    And in case you wonder why he would use that notation, tell me what this means:

    [tex]\sin x^2[/tex]

    Some people never really appreciate the usefullness of parantheses.
     
  7. Nov 3, 2005 #6
    The angle is squared
     
  8. Nov 3, 2005 #7
    :biggrin:
    True, [tex] \sin x ^ 2 = \sin (x^2) [/tex]
    and
    [tex]\sin ^2 x = \left( {\sin x} \right)^2 [/tex]
     
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