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given length and direction then how to find a vectorusing vector algebra

given length and direction then how to find a vectorusing vector algebra

Grade:11

2 Answers

raj
384 Points
5 years ago
hello praveen,
first you must know x-axis is represented by i,y-axis is represented by j and ,z-axis is represented by k.then in the given length identify the coefficient of x,y andz axes.then write like below shown.
ex:-a(1,2,3)
then vector is v=1i+2j+3k
Prabhakar ch
577 Points
5 years ago
in two dimensional magnitude or length formula is square root of x2+y2 and in 3d is square root of x2+y2+z2
Suppose that the coordinates of the vector are (3, 4). You can find the angle theta as the tan1(4/3) = 53 degrees. So if you have a vector given by the coordinates (3, 4), its magnitude is 5, and its angle is 53 degrees

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