(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Sudhir walks 0.40 km in a direction 60.0° west of north, then goes 0.50 km due west. What is his displacement?

2. Relevant equations

According to my textbook, the equations are:

Ax = A cos θ

Ay = A sin θ

Bx = B cos θ

By = B sin θ

θ = tan^{-1}opposite side/adjacent side

Source: http://www.jpopovich.com/file.php/19/phy_chap5.pdf on page 122.

3. The attempt at a solution

http://screensnapr.com/e/zuQNvk.png [Broken]

Click to see full image.

Both my answers are wrong according to my textbook. Can someone tell me why / explain to me?

The real answer: 0.87km at 77 degrees west

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Another Addition of Vectors question.

**Physics Forums | Science Articles, Homework Help, Discussion**