SOLUTION: . In triangle XYZ, XY=13, YZ=20, and XZ=25. What is the measure of angle Z?

SOLUTION: . In triangle XYZ, XY=13, YZ=20, and XZ=25. What is the measure of angle Z?

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Question 1026261: . In triangle XYZ, XY=13, YZ=20, and XZ=25. What is the measure of angle Z?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Law Of Cosines----------------------
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