Thread: Triangular Plot
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Old November 20th, 2008, 07:07 AM
magentarita magentarita is offline
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Quote:
Originally Posted by Soroban View Post
Hello, magentarita!

Law of Cosines . . .

x^2 \;=\;400^2 + 200^2 - 2(400)(200)\cos50^o \;=\;97153.98245

x \;=\;311.695... \;\approx\;312 yards



Formula: .A \;=\;\tfrac{1}{2}\;\!ab\;\!\sin C
. . The area is one-half the product of two sides and the sine of the included angle.

Therefore: .A \;=\;\tfrac{1}{2}(400)(200)\sin50^o \;=\;30641.777... \;\approx\;30,\!642 square yeards.
Wonderfully done!
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