Solve this: 11 . F o r a n y n o n - z e r o v e c t o r s a → a n d b → , p r o v e t h a t t h e v e c t o r s a → b → + b → a → a n d a → b → - b → a → a r e p e r p e n d i c u l a r t o e a c h o t h e r . Share with your friends Share 0 Neha Sethi answered this Dear student To show: a→b→+b→a→ and a→b→-b→a→ are ⊥ to each other.To show: a→b→+b→a→.a→b→-b→a→=0 ,consider a→b→+b→a→.a→b→-b→a→=a→a→b→b→-a→b→a→.b→+b→a→a→.b→-b→b→a→.a→=a→2b→2-a→2b→2 ∵x→2=x→.x→=0⇒a→b→+b→a→ and a→b→-b→a→ are ⊥ to each other.∵when two vectors are ⊥ their dot product is zero. Regards 1 View Full Answer