Addition of Vectors using a scale diagram

[Obama]

Homework Statement

Add each set of vectors by using the scale diagram

C=28km 20 degrees north of east; D=34 km 30 degrees west of north

Homework Equations

The Attempt at a Solution

Attempted to create a triangle with a right angle; then Pythagorean

 

[Simon Bridge]

The vectors do not form a right-angle between themselves.
You need to draw them head-to-tail.

Pick a scale, say 1cm=1km, and mark a point on your paper as the starting point and a direction for north.

Draw the vector C from the dot - use a ruler and protractor to draw it to the right length and angle - it should look like an arrow pointing away from the start point. Then draw vector D, starting at the head of vector C you just drew.

Nor draw an arrow that goes from the start point to the head of D - that is the vector sum of the other two. Measure the length and angle of this one.