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10-32.

What is in each triangle below?

  1. Triangle labeled as follows: left side, 8, right side, 12, bottom side, 10, right bottom vertex, c.

Use the Law of Cosines to solve this problem.

  1. Right triangle labeled as follows: horizontal leg, 13, vertical leg, 7, vertex opposite vertical leg, c.

    This is a right triangle, and you know the lengths of both legs. Which trig function uses this information?