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May 29, 2015

Homework Help: physics repost

Posted by Anonymous on Wednesday, April 16, 2008 at 3:01am.

What should be the angle between two vectors of magnitudes 3.20 and 5.70 units, so that their resultant has a magnitude of 6.10 units?

cos=a^2+b^2-c^2/2ab
cos10.24+32.49-37.21/(2*3.20*5.70)
= 99 degrees

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