Home
Class 11
PHYSICS
The angle between two vectors -2hati+3ha...

The angle between two vectors `-2hati+3hatj+k` and `hati+2hatj-4hatk` is

A

`45^(@)`

B

`90^(@)`

C

`30^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
`(b) Let A=-2hati+3hatj+hatk`
`B=hati+2hatj-4hatk`
`thereforeA.B =(-2hati+3hatj+hatk).(hati+hatj-4hatk)=-2+6-4=0`
Since dot product of two vector is zero so vrctor will be perpendicular each other
Promotional Banner

Topper's Solved these Questions

  • BASIC MATHEMATICS

    DC PANDEY|Exercise Exercise|13 Videos

  • CALORIMETRY & HEAT TRANSFER

    DC PANDEY|Exercise Level 2 Subjective|14 Videos

Similar Questions

Explore conceptually related problems

The angle between the two vectors -2hati+3hatj+hatk and hati+2hatj-4hatk is -

The angle between the two vectors -2hati+3hatj-hatk and hati+2hatj+4hatk is

The angle between the vector 2hati+hatj+hatk and hatj ?

Find the angle between the vectors hati-2hatj+3hatk and 3hati-2hatj+hatk .

The angle between the vector -hati+hatj and 2 hati+3hatj is :

Determine the sine of the angle between the vectors 3 hati +hatj +2hatk and 2hati - 2hatj +4hatk .

The sine of the angle between the vector a=3hati+hatj+hatk and b=2hati-2hatj+hatk is

The angle between the vector -hati+hatj and 2hati+3hatj is :