Use Heron's Area Formula to find the area of the triangle. (Round your answer to two decimal places.) A = 81°, b = 73, c = 39
Added by Nestor L.
Step 1
We have angle A, side b, and side c. We can use the Law of Cosines to find side a: a^2 = b^2 + c^2 - 2bc * cos(A) a^2 = 73^2 + 39^2 - 2(73)(39) * cos(81°) a^2 ≈ 5340.97 a ≈ √5340.97 ≈ 73.08 Show more…
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