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anonymous

  • one year ago

Please help. Will medal and fan

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  1. anonymous
    • one year ago
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    Simplify \[\sqrt{\frac{ (1-\cos \theta)(1+\cos \theta) }{ \cos ^{2} \theta}}\]

  2. anonymous
    • one year ago
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    \[\sqrt{\sin \theta}\] \[\pm \sin \Theta\] \[\pm \cos \Theta\] \[\left| \tan \Theta \right|\]

  3. Vocaloid
    • one year ago
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    hint: (1-cos theta)(1+cos theta) = 1 - cos^2(theta) = sin^2(theta(

  4. anonymous
    • one year ago
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    So it'd be A?

  5. Vocaloid
    • one year ago
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    nope, try multiplying out (1-cos(theta))(1+cos(theta)) under the radical and converting to sin^2(theta) remember you've still got cos^2(theta) in the denominator

  6. Vocaloid
    • one year ago
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    |dw:1432863667930:dw|

  7. anonymous
    • one year ago
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    Okay.. I'm not exactly sure what to do next. I'm on the last question of my assignment and I haven't been very good at this part

  8. Vocaloid
    • one year ago
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    hint: |dw:1432863783112:dw|

  9. anonymous
    • one year ago
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    So it'd be |dw:1432863826728:dw|

  10. Vocaloid
    • one year ago
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    right, keep going! how can we simplify this down to one expression?

  11. anonymous
    • one year ago
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    you would divide cos (theta) from sin (theta) correct? I'm not exactly sure what we'd get though

  12. Vocaloid
    • one year ago
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    sin(theta)/cos(theta) = tan(theta) you must memorize this equation, you will need it!

  13. anonymous
    • one year ago
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    So it would be D. I will thank you :)

  14. Vocaloid
    • one year ago
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    right, good job

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