Q21 of 93 Page 25

If and are unit vectors, then write the value of .

Let’s have a look at everything we have before proceeding to solve the question.


→ Given (Unit Vectors)




Now then,






= 2(1)(1)sin2θ


= 2 sin2θ


In case, the question asks for






=(1)(1)


= 1


More from this chapter

All 93 →
19

If and are unit vectors such that is also a unit vector, find the angle between and .

 20

If and are two vectors such that , write the angle between and .

 22

If is a unit vector such that , find .

 23

If is a unit vector perpendicular to the vectors and , write another unit vector perpendicular to and.