# How do i find the horizontal component of a vector?

${A}_{x} = | \vec{A} | \cos \theta \cdot \hat{i}$
Any vector $\vec{A}$ of magnitude $| \vec{A} |$ and acting at an angle $\theta$ to the horizontal or the positive x-axis, has a horizontal component given by
${A}_{x} = | \vec{A} | \cos \theta \cdot \hat{i}$,
where $\hat{i}$ is a unit vector along the positive x-axis.