SOLUTION: write XY(line above)as the sum of unit vectors for X(8, 2, -9) and Y(-12, -1, 10)

SOLUTION: write XY(line above)as the sum of unit vectors for X(8, 2, -9) and Y(-12, -1, 10)

Algebra.Com

Question 218325: write XY(line above)as the sum of unit vectors for
X(8, 2, -9) and Y(-12, -1, 10)
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
xy = sqrt{(8--12)^2 +(2--1)^2 + (-9-10)^2}
.
xy = sqrt{ 20^2 +3^2 + (-19)^2 }
.
xy = sqrt { 400+9+361}
.
xy = sqrt{770}
.
xy = 27.75
.

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