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8 September, 03:32

If t = - 2π/3, evaluate (if possible) sin t, cos t, tan t

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  1. 8 September, 03:48
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    T = - 2 π / 3 = - 120° = 240°

    From the unit circle:

    sin t = - √ 3 / 2

    cos t = - 1/2

    tan t = sin t / cos t = ( - √3 / 2) : ( - 1/2) = √ 3
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