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Grade: 12th pass
        A and B are two unit vector both are perpendicular to each other. Given that  vector x=vector b-vector(a×x) what is the magnitude of X vector ?
8 months ago

Answers : (1)

Prakriti Arora
11 Points
							|a|=1;   |b|=1since a and b are perpwndicular to each other.. therefore a.b=0 =>|a||b|cos(theeta)=0 =>cos(theeta)=0 =>theeta=π\2now x=b-(aXx) =>|x|=|b|-|a||x|sin(π\2) =>|x|=1-|a||x| =>|x|+|a||x|=1 =>|x|[1+1]=1  =>|x|=1/2...ans
						
8 months ago
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