## New test section: Test D

#### demonstrate the relationship between a vector, its components, and i, j, and k. Here is a 2D example.

#### Demonstrate the relationship between a vector and a collinear unit vector

#### Demonstrate the relationship between a vector and a collinear unit vector

#### Example 3.1.2

#### Figure 3.11

#### Example 3.1.2

The box beam is subjected to the forces as shown. Express each force in CVN and determine the magnitude and coordinate direction angles of the resultant force.