- #1

chocolatelover

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## Homework Statement

Vector A=(0i+3j), vector B=(8i+-1j), vector C=(-8i+5j) Use the component method to determine the following:

1. the magnitude and direction of Vector D=Vector A+vector B+vector C

2. vectorE=-A-B+C

## Homework Equations

## The Attempt at a Solution

1. magnitude D=A+B+C=square root (0+8+-8)^2+(3+-1+5)^2=9

direction=tan-1(3-1+5/0+8-8) this won't work because I am dividing by zero, but I'm not sure what it would be.

2. Magnitude -A-B+C=square root (-0-8+-8)^2+(-3--1+5)^2=2.65

direction=tan-1(3+-1+5/0+8-8)=undefined

Could someone please show me what I'm doing wrong?

Thank you very much