Consider a particle with initial velocity v⃗ that has magnitude 12.0 m/s and is directed 60.0 degrees above the negative x axis. What is the x component v⃗ x of v⃗ ?
60 degrees above the negative x axis means that we are in quadrant 2 so our x component will be negative. TO find the x component we use the cosine function as it represents x values. Our calculation looks like