To find a vector that has the same direction as the vector (6, 4, 2) but with a specific length (in this case, 6), you’ll need to follow these steps:
- Calculate the length (magnitude) of the original vector:
- Find the unit vector:
- Scale the unit vector to the desired length:
The length of a vector (x, y, z) can be calculated using the formula:
length = √(x² + y² + z²)
For the vector (6, 4, 2), the calculation is:
length = √(6² + 4² + 2²) = √(36 + 16 + 4) = √(56) ≈ 7.48
A unit vector in the same direction as (6, 4, 2) can be found by dividing each component of the vector by its magnitude:
unit vector = (6 / 7.48, 4 / 7.48, 2 / 7.48) ≈ (0.8038, 0.5345, 0.2673)
To obtain a vector with length 6, multiply each component of the unit vector by 6:
vector of length 6 = (0.8038 * 6, 0.5345 * 6, 0.2673 * 6) ≈ (4.823, 3.207, 1.603)
In summary, the vector that has the same direction as (6, 4, 2) and a length of 6 is approximately:
(4.823, 3.207, 1.603)