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March 30, 2017

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using the unit circle evaluate cos and sin for 30

  • trig - ,

    You should be familiar with the ratio of sides of a 30,60,90º triangle.

    use them to fill in the coordinates of all your critical values of P(cosα,sinα) on the unit circle

    here sin30º = 1/2
    cos30º = √3/2

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