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The law of sines and cosines

Calculus
Tutor: None Selected Time limit: 0 Hours

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

Dec 11th, 2014

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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Dec 11th, 2014
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