Question

If  are the position vectors of the vertices ABC of a triangleABC, then the area of triangle ABC is  

Solution

Correct option is

 

We have,

             

  

  

  

  

SIMILAR QUESTIONS

Q2

 

For any vector   

                

Q3

 is equal to 

Q4

A unit vector perpendicular to the plane of  and  is 

Q5

The number of vectors of unit length perpendicular to the vectors  

Q6

A unit vector making an obtuse angle with x-axis and perpendicular to the plane containing the points  also makes an obtuse angle with

Q7

 is a unit vector such that 

Q8

 then a unit vector normal to the vectors  

Q9

A unit vector perpendicular to both 

Q10

If , then the length of the perpendicular from A to the line BC is