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12-69.

While working on homework, Zachary is calculating the value of in each of the diagrams below. His first step for each problem is shown under the diagram. If his first step is correct, continue solving the problem to determine the solution. If his first step is incorrect, explain his mistake and solve the problem correctly.

  1. Triangle labeled as follows: bottom side, 10, right side, x, left bottom angle, 16 degrees, right bottom angle, 63 degrees.

    This is not a right triangle so use the Law of Sines.

  1. Triangle labeled as follows: bottom side, x, left side, 10, right side, 70, top angle, 50 degrees.

    This method is correct units