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The law of sines and cosines

label Calculus
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schedule 0 Hours
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we plan to fence a triangular fence on the land. One side is 75 feet in length and forms a 38 degree angle with another side of the fence which hasn't been measured.the remaining side is 95 feet in length.what is the length of the last side

Oct 17th, 2017

Let the angle opposite the 3rd side be A.

Let the unknown length be X.

sin(38)/95 = sin ( 180 - 38 - A ) / 75

=> A = 113 degrees.

( Sin 38 ) / 95 = Sin A / X

=> X = 142.

Dec 11th, 2014

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