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12-67.

Using the triangle on the right, find:    

Right triangle: horizontal side, A, C, labeled, b, vertical side, C, b, labeled, a, hypotenuse side, A, b, labeled, c.

  1. Remember that  is opposite over hypotenuse.

  1. How is  related to 

  1. Which trigonometric ratio is  related to? How is it related?

  1. Remember that  is opposite over adjacent.