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Home > PC > Chapter 4 > Lesson 4.2.3 > Problem 4-103

4-103.

Sketch a unit circle. In your circle, sketch an angle in standard position so that the angle has:

  1. A positive cosine and a negative sine.

    Any angle in Quadrant 4.
    Circle with ray from center to point in fourth quadrant, point of intersection with circle labeled with coordinate pair, positive, comma negative.

  2. A negative cosine and a negative sine.

    Any angle in Quadrant 3.
    Circle with ray from center to point in third quadrant, point of intersection with circle labeled with coordinate pair, negative, comma negative.

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