Introduction to the unit circle.

1. Introducing the unit circle
and it's family of functions ...
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2. How many radians are there between the minute and hour hands of a clock
at 4:00?

3. In a circle of radius 6 cm, a sector has a central angle of 30°. What is the
area of this sector in square centimeters?
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4. State a positive coterminal angle for .

5. P(θ) is on a ray passing through the point (6, 8). Find the sine, cosine, and
tangent of the angle θ.

6. P(θ) is on a ray passing through the point (6, 8). Find the sine, cosine, and
tangent of the angle θ.