If and , then what is ?
is the perpendicular foot from point on If and what isIn the figure above, the point
Note: The figure is not drawn to scale.
If and are vectors, then which of the following is not a valid operation?
Remember! Both inputs for a dot product must be vectors.
If the vectors and are perpendicular, what must be the value of
Hint: If two vectors are perpendicular, then their dot product is 0.
If and then evaluate