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Pre-Calc/Math

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if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

  • Pre-Calc/Math - ,

    (0,0),(9,-7).

    x = 0, Y = -7.
    r^2 = X^2 + Y^2,
    r^2 = 0 + (-7)^2 = 49,
    r = 7.

    secA = r/X = 7/0 = Infinite.

    cotA = X/Y = 0 / -7 = 0.

    sinA = Y/r = -7 / 7 = -1.

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