1. Scalars versus Vectors

2. Graphical Representation

3. Mathematical Representation

4. Vector Components

5. Unit Vectors

Awesome! Whenever \(\theta\) is the angle a vector makes with the +x-axis, its x-component is always determined by \(\mathrm{sin} \, \theta\).

What is the value of \(A_x\), the x-component of vector A?

\(10 \, \mathrm{sin} \,150^{\circ}\)

\(10 \, \mathrm{cos} \,150^{\circ}\)

\(10 \, \mathrm{sin} \,240^{\circ}\)

\(10 \, \mathrm{cos} \,240^{\circ}\)