Learn how to determine if two vectors are orthogonal, parallel or neither. You can setermine whether two vectors are parallel, orthogonal, or neither uxsing the dot/cross product or using the slope formula.
Recall that two lines are parallel if they both have the same slope and are perpemdicular/othorgonal is the slope of one of the lines is the negative of the reciprocal of the slope of the other line.
Also, if the scalar/dot product of two vectors gives zero then the two vectors are perpendicular/orthogonal but if the magnitude of the cross/vector product of two vectors is zero, then the two vectors are perpendicular.
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