Home
Class 11
PHYSICS
In a clockwise system :-...

In a clockwise system :-

A

`hatjxxhatk =hati`

B

`hatk.hati=1`

C

`hati.hati=0`

D

`hatjxxhatj=1`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) `AB sin theta =sqrt(3) AB cos thetaor tan theta =sqrt(3)`
`therwfore theta=60^(@)`
` "Now" ,|A+B|= sqrt(A^(2) +B^(2) +2AB cos60^(@))`
`= sqrt(A^(2)+B^(@)+AB)`
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

A vector veca has components 3p and 1 with rrespect to a rectangular cartesian system. This system is rotated through a certain angle about the origin in the counter clockwise sense. If, with respect to new system, veca has components p+1 and sqrt10 then a value of p is equal to :

What part of a revolution have you turned through if you stand facing (a) east and turn clockwise to face north? (b) south and turn clockwise to face east? (c) west and turn clockwise to face east?

Suppose a disc is rotating counter clockwise in the plane of the paper then .

Suppose a disc is rotating counter clockwise in the plane of the paper then

Vani is facing East direction. She turns 90^@ clockwise then 135^@ Anticlockwise and 45^@ clockwise, then in which direction she is facing now?