Kindly explain to me how to do part (a).tell me about the concepts behind it also, because i am not very sure about the it.thanks.
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Originally Posted by helloying Kindly explain to me how to do part (a).tell me about the concepts behind it also, because i am not very sure about the it.thanks. vector AB= (pv of B)-(pv of A)=(3i+j)-(-i-j)=4i+2j similarly find othr vectors BC=-2i+j CD=-2i-j DA=0i-2j
vector AB= (pv of B)-(pv of A)=(3i+j)-(-i-j)=4i+2j similarly find othr vectors BC=-2i+j CD=-2i-j DA=0i-2j we can see that AB =-2 times CD so arms AB and DC are parallel length of AB=|AB|=sqrt[20] length of CD=|CD|=sqrt[5]
Last edited by sumit2009; Mar 6th 2009 at 05:10 AM. Reason: type error
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