The head of vector A is at the coordinate (3,4,9) and its tail is at (-2,3,5) write the vector.
To write the vector, we need to find the difference between the coordinates of the head and tail points.
The vector can be written as the displacement from the tail point (-2,3,5) to the head point (3,4,9).
Subtracting the coordinates of the tail point from the coordinates of the head point, we get:
(3 - (-2), 4 - 3, 9 - 5) = (5, 1, 4)
Therefore, the vector is written as:
𝑉𝑒𝑐𝑡𝑜𝑟 𝐴 = (5, 1, 4)