SOLUTION: Suppose that two sides of a triangle have lengths 8.4 and 7.6 with an included angle of 82 degrees. Find the length of the third side to three significant digits.
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Question 1138356: Suppose that two sides of a triangle have lengths 8.4 and 7.6 with an included angle of 82 degrees. Find the length of the third side to three significant digits.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Law of Cosines
c^2=a^2+b^2-2ab cos C
=128.32-2(8.4)(7.6)cos 82
=128.32-17.77
=110.55
a=10.51 or 10.5
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