find the length and direction for each of the vector if a. x=23, y=45 b. x=16.2, y=28.7 c. x=382.4, y=768.3
For the length use Pythagoras's theorem: r = sqrt(x^2 + y^2)
For the direction, the angle to the horizontal is given by theta = tan-1(y/x)
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+185 
