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anonymous
 4 years ago
Find the area of the parallelogram with the defining vectors
i) a=( 4,5) and b= (7,2)
ii) a= (4,5,3) and b= (7,2,4)
anonymous
 4 years ago
Find the area of the parallelogram with the defining vectors i) a=( 4,5) and b= (7,2) ii) a= (4,5,3) and b= (7,2,4)

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amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1subtract one vector from the other to get it to the origin; is my first thought

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1but my first thought aint always too good :)

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1dw:1327355180731:dw

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1maybe better idea. magnitude of b * height; where height is the "a"sin(a)

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1the determinate of the vector matrix of the first one would be good, but not work out to well for the second

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1i can recall the dot product stuff for cos(t) but never for sin(t) for some reason

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1The cross product a × b is defined as a vector c that is perpendicular to both a and b, with a direction given by the righthand rule and a magnitude equal to the area of the parallelogram that the vectors span. from the wiki i think

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1so axb seems to be the area of the parallelogram if im reading this right

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1now i gotta recall how to cross a 2component vector

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.13 components i can do :)

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1ii) a= (4 5 3) and b= (7 2 4)  x = 206 = 14 y=(1621) = 37 z = 8+35 = 43 sqre them add them and sqrt them for magnitude; might wanna use a calcultor :)

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1http://www.wolframalpha.com/input/?i=sqrt%2814%5E2%2B37%5E2%2B43%5E2%29 58.5 thereabouts?

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1cross was good; i can wolf the other one for simplicities sake too

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1determinant of the vector matrix on 1 is 43, with any luck i recalled that stuff right

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0woowww thank you soo soo much!! :)

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1do we know if i was right? lol
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