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12-65.

Using the triangle at right, determine:

This problem is similar to problem 12-58. Refer back to that problem if you need some help.

  1. Remember that is equal to opposite over adjacent.

  1. This is related to part (a). How?

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