Vector a (2,6) vector b (8,4) find the sum of the coordinates of the vector a-b find the square of the length of the vector a-b.
| September 18, 2021 | education
The coordinates of the vector a – b are equal to the difference between the coordinates of the vectors a and b:
(2 – 8; 6 – 4) = (-6; 2).
Therefore, the sum of the coordinates of the vector a – b is equal to
-6 + 2 = -4.
The square of the length of the vector a – b is equal to the sum of the squares of its coordinates, that is
(-6) ^ 2 + 2 ^ 2 = 36 + 4 = 40.
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