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anonymous

  • one year ago

Consider the vector v=(-7, 8) Write v in the form (|v|cos theta, |v| sin theta) Part I: Find the magnitude of vector v. Express your answer in radical form.

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  1. IrishBoy123
    • one year ago
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    |dw:1441951797149:dw|

  2. anonymous
    • one year ago
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    So v would be √8^2+-7^2=√113 Then √113 cos thetha and √113 sin theta?

  3. IrishBoy123
    • one year ago
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    |dw:1441957649161:dw|

  4. anonymous
    • one year ago
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    Oh, so I just use the theta angle I found earlier? In the earlier part of the equation I got theta=131.2 degrees.

  5. IrishBoy123
    • one year ago
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    "looks" right :-)

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