#### JVeazie

1. The problem statement, all variables and given/known data

Given the following vector components of vectors C and D:
Cx = 8.10, Cy = -5.40, Cz = -7.90, Dx = 4.40, Dy = -2.50, Dz = 4.50,
find the x, y, z components of their sum.

2. Relevant equations

No relevant equations that I know of....

3. The attempt at a solution

I am lost completely. I do understand using (x,y) components, as well as use of the Pythagorean theorem for right triangles, etc....
The z component is throwing me off completely. Do I use the (-) as an indication of direction? Does Z represent a hypotenuse?
Im so confused.

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#### Student100

Gold Member
1. The problem statement, all variables and given/known data

Given the following vector components of vectors C and D:
Cx = 8.10, Cy = -5.40, Cz = -7.90, Dx = 4.40, Dy = -2.50, Dz = 4.50,
find the x, y, z components of their sum.

2. Relevant equations

No relevant equations that I know of....

3. The attempt at a solution

I am lost completely. I do understand using (x,y) components, as well as use of the Pythagorean theorem for right triangles, etc....
The z component is throwing me off completely. Do I use the (-) as an indication of direction? Does Z represent a hypotenuse?
Im so confused.
Z represents that you're working in $\mathbb{R}^3$, do you know what this means?

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