Q26 of 181 Page 1080

Mark (√) against the correct answer in the following:

If and are unit vectors such that then


Given are unit vectors and


|


Let the angle between be θ


We can write the given relation as


Squaring on both the sides



⇒


⇒ 1+1+=1


⇒ =-1


⇒=-


Similarly we can prove that and


Asking us to find the value of (


=


=

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