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![[Post New]](/templates/default/images/icon_minipost_new.gif) 6 Jun 2008 16:11:11 IST
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If  and  are mutually perpendicular unit vectors, then  is equal to :
3
1
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The deepest secret is that life is not a process of discovery, but a process of creation. You are not discovering yourself, but creating yourself anew. Seek therefore, not to find out who you are; seek to determine who you want to be."
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6 Jun 2008 16:16:58 IST
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Simple yaar...Ia+b+cI2=a2+b2+c2+2(a.b+b.c+c.a)=3+2(0)=3
Since a,b,c are mutually perpendicular,a.b=b.c=c.a=0 and a2=b2=c2=1 as it is mentioned that they are unit vectors.
So,the answer is  .
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MAKING A MISTAKE IS HUMAN BUT REPEATING IT IS IDIOTIC. |
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6 Jun 2008 16:19:54 IST
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oops truly.. that was quite simple.. well i've rated u because of my foolishness.
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