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babydoll332 Group Title

Find the exact value of sin-1(-0.5).

  • one year ago
  • one year ago

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  1. babydoll332 Group Title
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    pi/3 correct?

    • one year ago
  2. satellite73 Group Title
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    no because \[\sin(\frac{\pi}{3})=\frac{1}{2}\] not \(-\frac{1}{2}\) but you have the right idea

    • one year ago
  3. satellite73 Group Title
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    go the other way on the unit circle to \(-\frac{\pi}{3}\)

    • one year ago
  4. babydoll332 Group Title
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    ok so -pi/3

    • one year ago
  5. babydoll332 Group Title
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    it makes sense

    • one year ago
  6. satellite73 Group Title
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    yup don't forget your answer has to be between \(-\frac{\pi}{2}\) and \(\frac{\pi}{2}\) which is why you are not allowed to say \(\frac{2\pi}{3}\) for example

    • one year ago
  7. babydoll332 Group Title
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    got :))

    • one year ago
  8. satellite73 Group Title
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    good!

    • one year ago
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