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OpenStudy (anonymous):
Arny flies due east from San Francisco to Washington, D.C., a displacement of 5600. km. He then flies from Washington to Boston, a displacement of 900. km at an angle of 55. degrees east of north. What is Arny's total displacement?
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OpenStudy (psymon):
|dw:1380000650360:dw| The only problem is im not sure what formulas youd be expected to know or not know. I have the law of cosines formula, but if you havent been shown that then we have to work it differently.
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