Kenneth S. answered • 05/24/16
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Sketch the triangle with angle A facing known side a=20, and angle B facing unknown side b.
Use the Law of Sines: b/sin 75 = a/sin50. Substitute a=20 and multiply both sides by sin 75:
b = 20(sin 75)/(sin 50), and use your calculator (in Degree Mode).
Kenneth S.
you have three sides of a triangle, a, b & c. It's NOT a right triangle, so you must use the Law of Cosines to solve for a selected angle--find angle A, because that's going to be the largest angle (opposite the largest side). Then Law of Sines will enable you to solve for another angle, which will in effect solve the triangle.
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05/24/16
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05/24/16