Step-by-step explanation:
A:B:C
2:3
6:7
12:18:42
I think...
Answer:

Step-by-step explanation:

I hope that uesful for u :)
Solution: Z= -9
Reasoning: -6 - 3 = -9
If vector A⃗ has components Ax and Ay and makes an angle θ with the +x axis, then tanθ = Ay/Ax to get the angle of the vector components. Since the trigonometric function of tanθ is sinθ over cosθ, and since sinθ = y/r and cosθ = x/r.
It's a little hard picturing that, do you happen to have a photo of the coordinate plane or graph?