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12-76.

Using the triangle at right, find: 

This problem is similar to problem 12-67. Refer back to that problem if you need some help.

  1. What trigonometric ratio is sec a reciprocal of?
    What parts of the triangle are used in that ratio?

  1. Remember that tan is equal to opposite over adjacent.

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

  1. What trigonometric ratio is csc a reciprocal of?