On a separate piece of paper, sketch a unit circle with angle θ in standard position. Use the circle to answer the following questions: For what values of θ is the sine increasing? Decreasing? For what values of θ is the cosine increasing? Decreasing? For which angle between 0° and 360° is sine equal to 0? Where is cosine equal to 0?
I'm really confused about the Unit Circle because textbooks are basically useless. Also how do you make an angle of θ if they don't tell you what it is? I know it's the degree of the angle but they don't say. help please!!

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