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Mathematics 7 Online
OpenStudy (shamim):

if two diagonals of a parallellogram are P vector nd Q vector. i dont understand hw the area of that parallelogram is 0.5|P*Q|. half of the value of vector product of two diagonals

OpenStudy (shamim):

help plz

OpenStudy (shamim):

@ganeshie8

OpenStudy (shamim):

@satellite73

OpenStudy (shamim):

@hero

OpenStudy (anonymous):

ok first lets draw it

OpenStudy (shamim):

ok

OpenStudy (anonymous):

|dw:1401198026838:dw| here is our parrellagram

OpenStudy (shamim):

hm

OpenStudy (anonymous):

draw diagionals p&q

OpenStudy (shamim):

then

OpenStudy (anonymous):

|dw:1401198194569:dw|

OpenStudy (shamim):

hm

OpenStudy (anonymous):

what is the next part of the question ask

OpenStudy (shamim):

the area of a parallelogram is half of the value of cross product of vectors P nd Q

OpenStudy (shamim):

nd i dont understand it

OpenStudy (anonymous):

ok so that means p and q are fractions (cross product=cross multiply)

OpenStudy (shamim):

ya

OpenStudy (anonymous):

what are the fractions

OpenStudy (shamim):

0.5

OpenStudy (anonymous):

both of them

OpenStudy (anonymous):

0.5=1/2

OpenStudy (shamim):

half of the value of cross product of P nd Q

OpenStudy (anonymous):

|dw:1401198614097:dw|

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