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calculate the area of a parallelogram by vectors a=3i+2j. and b=-3i+7j. [the area is given by modulus of a cross b.since area is a scalar product why can”t we use a.b?]

liza , 7 Years ago
Grade 11
anser 1 Answers
Arun
Dear student
 
When we find the area of parallelogram algebraically we get the term sin theta involved hence
 
We have to use cross product
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Last Activity: 7 Years ago
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