A triangular plot of land is enclosed by a fence. One side of the fence is 30.3 m long and an adjacent side of the fence is 18.5 m long. The inclusive angle between the two sides is 61°. Determine the third side of the fence to the nearest tenth of a metre.
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Step 1: Use the law of cosines to find the length of the third side of the fence. Show more…
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Applications of Trigonometry and Trigonometric Identities
The Law of Sines and the Law of Cosines
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