problem01_87 - perpendicular). b) If , cos , 2 2 2 < +...

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1.87: The best way to show these results is to use the result of part (a) of Problem 1-65, a restatement of the law of cosines. We know that , cos 2 2 2 2 φ AB B A C + + = where is the angle between A and B . a) If , 0 cos , 2 2 2 = + = B A C and the angle between A and B is 90 (the vectors are
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Unformatted text preview: perpendicular). b) If , cos , 2 2 2 < + < B A C and the angle between A and B is greater than 90 . c) If , cos , 2 2 2 + B A C and the angle between A and B is less than 90 ....
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This homework help was uploaded on 02/14/2008 for the course PHYS 112 taught by Professor Wheeler during the Spring '08 term at Cornell University (Engineering School).

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