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Home > PC3 > Chapter 2 > Lesson 2.2.4 > Problem 2-105

2-105.

​​Sketch a unit circle. In your circle, sketch an angle between and that has   

  1. A positive cosine and a negative sine.

     

  2. A sine of .

  3. A negative cosine and a negative sine.

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

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

    Does ?