Question

what is the use of scaler and vector in our life?

Answer 1

great example would be how airplane pilots receive instructions to land at airports. During a visual approach, the Air Traffic Control instructs pilots to fly a particular heading(direction) for a certain distance(magnitude). This is exactly what a vector quantity is- something that has a magnitude and direction. This is why the Air Traffic Controllers might sometimes use the phrase " expect vectors for the visual approach..." when the plane nears the airport.