can you add three unit vectors to get a unit vector? Does your answer change if two unit vectors are along the coordinate axes?

What is a unit vector?

Define unit vector.

Unit vector does not have any

The unit vector along hati+hatj is

Write a unit vector making equal acute angle with the coordinates axes.

The unit vector of a vector vecA =2hati + 4hatj is

Which of the following represents a unit vector ?

Define unit vector, null vector and position vector .

Unit vector along 3hat(i)+3hat(j) is

(a) Derive an expression for unit vector along reflected ray (hat r) if unit vectors hat i and hat n represents unit vectors along incident light ray and normal (at point of reflection and outward from surface) respectively. (b) If vector along the incident ray on a mirror is -2 hat i+ 3 hat j + 4 hat k . Considering the x-axis to be along the normal. Then, find the unit vector along the reflected ray.