- #1

dolpho

- 66

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## Homework Statement

Referring to the vectors in the figure, express the sum A + B + C in unit vector notation.

http://i.imgur.com/ajMkK.png

## Homework Equations

I'm not sure if it wants me to add Dy, I've tried it both times and masteringphysics won't take either answer.

## The Attempt at a Solution

I'm assuming we need Ax, Ay, Bx, By, Cy, Cx and add Dy.

Ay= sin40 x 1.5 = .96

Ax= Cos40 x 1.5 = 1.15

Bx= Cos19 x 2.0 = 1.89

By= Sin19 x 2.0 = .65

Cx= Cos25 x 1 = .906

Cy= sin25 x 1 = .42

Dy= 1.5

The sum would be (3.946, 3.53)?

Would appreciate any help on this problem, I'm not really quite sure what I'm missing or if I did the trig wrong.

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