Question

Find the magnitude & direction of the vector JK given points J(1,0) & K(-2,3).




Select one:


a. 32 √ 32 ; 135 degrees

b. 43 √ 43 ; 140 degrees

c. 6 ; 135 degrees

d. 55 √ 55 ; 150 degrees

Answer 1

vector JK is found by doing K-J (i.e. end point minus start point)
in this case JK given points J(1,0) & K(-2,3)
(-2,3) - (1,0)= ( -2-1, 3-0) = (-3, 3)
if you plot this point , and draw a vector with its tail at (0,0)
and its head at (-3,3) you have