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If unit vectors vec aa n d vec b are i...

If unit vectors ` vec aa n d vec b` are inclined at angle `2theta` such that `| vec a- vec b|<1a n d0lt=thetalt=pi,t h e ntheta` lies in interval a.`[0,pi//6]` b. `[5pi//6,pi]` c. `[pi//6,pi//2]` d. `[pi//2,5pi//6]`

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