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    Trigonometry Quadrant Functions

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    1. If cos θ = 4/5 and θ is in quadrant IV, find the values of the trigonometric functions of θ.

    2. Suppose θ is in the interval (90º, 180º). Find the sign of each function value.
    (a) cos θ/2
    (b) cot(θ - 180º)

    2. Use the reciprocal, quotient, and Pythagorean identities to give three expressions that complete the following statement:
    cot θ = _____________.

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    https://brainmass.com/math/trigonometry/trigonometry-quadrant-functions-28054

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    The expert examines trigonometric quadrant functions.

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