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March 26, 2017

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find the coordinates of the terminal point on the unit circle determined by t=9pt/7 to two decimal places

  • huh? - ,

    what does
    t=9pt/7
    mean?

    We need an angle counterclockwise from the x axis in radians or degrees.

  • trig - ,

    I think she means 9pi/7

    x = cos(9pi/7) = -0.62
    y = sin(9pi/7) = -0.78

    so, the point is (-0.62,-0.78)

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