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Trig

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Evaluate (if possible) the sine,cosine, and tangent of the angle

10pi/3

  • Trig - ,

    10π/3 - 2π = 3π/2

    then see

    http://www.jiskha.com/display.cgi?id=1307390418

  • Trig - ,

    (10pi/3)rad * (1/2pi)rev/rad = 5/3 =
    1 2/3 rev.
    2/3 rev * 360deg/rev = 240 deg.

    sin(240) = -0.8660 = -(sqrt3)/2.

    cos(240) = -0.50 = -1/2.

    tan(240) = 1.732 = sqrt3.

    240 deg. = 4pi/3 rad.

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