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9-53.

Sketch a unit circle. In your unit circle, sketch an angle that has: 9-53 HW eTool (Desmos)  Homework Help ✎

  1. A positive cosine and a negative sine.

  2. A sine of .

  3. A negative cosine and a negative sine.

  4. A cosine of approximately and a sine of approximately .

  5. Can an angle have a sine of and cosine of ? Give an example or explain why not.

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