$\"\"$

The equation for the projection of $\"\"$ onto $\"\"$ is $\"\"$ .

If $\"\"$ and $\"\"$ are perpendicular, then they are orthogonal.

Since $\"\"$ and $\"\"$ are perpendicular $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

So, the projection of $\"\"$ onto $\"\"$ is $\"\"$ .

$\"\"$

The projection of $\"\"$ onto $\"\"$ is $\"\"$ .