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Geometry

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Moderate

Trigonometry: Law of Cosines/Finding Angle Measure

GEOM-PXDSPL

Three sides of a triangular plot of land have lengths of $300$ feet, $200$ feet, and $400$ feet. Find the measure of the largest angle formed by the sides of the plot.

A

${75.5}^{\circ}$

B

${104.5}^{\circ}$

C

No solution