Solve Applied Problems Using the Law of Cosines
-Two Airplanes $135 ^ { \circ }$

question 209

Multiple Choice

Solve Applied Problems Using the Law of Cosines
-Two airplanes leave an airport at the same time, one going northwest (bearing $135 ^ { \circ }$ ) at $422 \mathrm { mph }$ and the other going east at $347 \mathrm { mph }$ . How far apart are the planes after 2 hours (to the nearest mile) ?

• A) 1422 miles
• B) 711 miles
• C) 1184 miles
• D) 1268 miles

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