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anonymous

  • one year ago

Suppose you start at the point(1,0) on a unit circle and move a distance t=3.5 along the circle. What is the reference number for t?

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  1. Jhannybean
    • one year ago
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    |dw:1443954591287:dw| So we're starting off at \(P (1,0)\) and we're looking for \(\mathbf {\overline t}\)

  2. Jhannybean
    • one year ago
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    To do that, we're simply going to subtract the distance, \(\mathbf t = 3.5\) by \(2\pi\) to find \(\mathbf{\overline t}\)

  3. Jhannybean
    • one year ago
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    \[\overline t = 2\pi - 3.5 =~?\] This is what you call the reference number.

  4. anonymous
    • one year ago
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    would you simply multiply 2(3.14)-3.5?

  5. anonymous
    • one year ago
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    I got 2.7

  6. Jhannybean
    • one year ago
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    Yeah but I wouldn't limit it to 3.14 unless specifically asked for, it gives an inaccurate reading and the reference number is simply an approximation.

  7. Jhannybean
    • one year ago
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    so \(\overline t \approx 2.78\)

  8. anonymous
    • one year ago
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    thank you so much! You literally saved me. I have a quick question about trigonometry and right angles. I know all the angles but don't know any of the sides

  9. Jhannybean
    • one year ago
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    Youre not really giving me any answer choices to work with so I can check whether my solution matches up to any of the choices.

  10. anonymous
    • one year ago
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    oh there are no answer choices. I'm taking an online program called wamap. I just have to input my answer and see if it's right or not

  11. Jhannybean
    • one year ago
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    This is not a quiz is it?

  12. anonymous
    • one year ago
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    no it's not it's homework in preparation for the quiz.

  13. Jhannybean
    • one year ago
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    Okay.

  14. Jhannybean
    • one year ago
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    Here is a website that will help you understand more about reference numbers, just scroll down. http://cims.nyu.edu/~kiryl/Precalculus/Section_5.1-The%20Unit%20Circle/The%20Unit%20Circle.pdf

  15. anonymous
    • one year ago
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    I actually own that book :) and it doesn't really mention anything about finding unknown sides

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