type out the two equations substituting the numbers from the diagram.

solve for α in the oblique triangle ABC; AB = 30; AC = 15, and angle B = 20°

type out the two equations substituting the numbers from the diagram.

  • First, type out the Law of Sines set of relationships.
  • Next, type out the most appropriate version to use the Law of Cosines for this solution.

Write both equations and make a prediction of which method will be easier to use in finding a solution and why you think that is the case.

 

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