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Consider the angle in standard position whose measure is radians. The terminal side of this angle is in the third quadrant and lies on the line given by y=10x. Find sin and cos.

  • trig -

    The nice thing is that the equations for sin and cosine automatically take into the signs involved.

    consider the point (-1,-10) in the third quadrant. h = sqrt(101) and is always positive

    sin = y/h = -10/sqrt(101) = -0.995
    cos = x/h = -1/sqrt(101) = -0.0995

  • trig -

    Sin therapists divide by 2

  • trig -

    Sin theta divide by 2

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