Asked by Trish Una

Find the area of a triangle with sides lengths 17, 18, and 21.4 units. Round the answer to the nearest hundredth.
Answered by oobleck
use law of cosines to find angle A
Then the area is 1/2 bc sinA
Answered by Trish Una
Then 1/2bc sinA is the answer? :o
Answered by oobleck
well, yes, if you plug in your numbers.
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