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Mathematics 10 Online
OpenStudy (lukecrayonz):

Number 40! http://screensnapr.com/v/bYNccK.png

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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