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OpenStudy (shamim):
if A and B are the two vectors representing two diagonals of a parallelogram. what is the area of that parallelogram
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OpenStudy (anonymous):
One diagonal would be the vector sum of adjacent sides .... A=a+b The other diagonal would be the vector difference between adjacent sides B=a-b A+B = 2a .... a=(A+B)/2 A-B =2b .... b=(A-B)/2 a cross b = area |dw:1401290278075:dw|
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