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OpenStudy (lukecrayonz):
Number 40! http://screensnapr.com/v/bYNccK.png
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OpenStudy (anonymous):
magn = 8
OpenStudy (lukecrayonz):
How did you find that?
OpenStudy (lukecrayonz):
Or is it just the 8 in the beggining?
OpenStudy (anonymous):
i and j is a unit vector i just done this 8(cos(135)^2+sin(135)^2)=8 i use this cos(x)^2+sin(x)^2=1
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