﻿ If  are unit vectors inclined to x-axis at angles 30o and 120o, then  equals : Kaysons Education

# If  are Unit Vectors Inclined To x-axis At Angles 30o and 120o, Then  equals

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## Question

### Solution

Correct option is

Clearly,  are at right angle.

PROPERTY IX If  are three vectors, then

PROOF We have

#### SIMILAR QUESTIONS

Q1

unit vectors such that , then the value of

Q2

If  are unit vectors, then the greatest value of

Q3

If the unit vectors  are inclined at an angle 2θ such that  then θ lies in the interval

Q4

Let  be two unit vectors and α be the angle between them, then  is a unit vector, if α =

Q5

If  then the angle between

Q6

Let  are two vectors inclined at an angle of 60o. If  then the angle between

Q7

If  are unit vectors such that  is also a unit vector, then the angle between , is

Q8

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Q9

If  are unit vectors such that  and  then

Q10

If  are three vectors such that