SOLUTION: a triangle has an area of 85 cm2. if two of the sides are 18 and 11 what is the third side?
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Question 963753: a triangle has an area of 85 cm2. if two of the sides are 18 and 11 what is the third side?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
From the area, assume that the base is 18, then,
The angle, A, opposite the unknown side, a, can be determined using side 11 and h since,
So then using the law of cosines,
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