If the equation of two lines are given by `bar(r)=bar(a_(1))+lamdabar(b_(1))andbar(r)=bar(a_(2))+mubar(b_(2))` , where `lamda and mu` are parmater , then the angle `theta` between the lines isA. `"cos"theta=(bar(a_(1)).bar(b_(2)))/(|bar(a_(1))||bar(b_(2))|)`B. `"cos"theta=(bar(a_(2)).bar(b_(1)))/(|bar(a_(2))||bar(b_(1))|)`C. `"cos"theta=(bar(b_(1)).bar(b_(2)))/(|bar(b_(1))||bar(b_(2))|)`D. `"cos"theta=(bar(a_(1)).bar(a_(2)))/(|bar(a_(1))||bar(a_(2))|)`

If the equation of two lines are given by `bar(r)=bar(a_(1))+lamdabar(

1.	If the equation of two lines are given by `bar(r)=bar(a_(1))+lamdabar(b_(1))andbar(r)=bar(a_(2))+mubar(b_(2))` , where `lamda and mu` are parmater , then the angle `theta` between the lines isA. `"cos"theta=(bar(a_(1)).bar(b_(2)))/(\|bar(a_(1))\|\|bar(b_(2))\|)`B. `"cos"theta=(bar(a_(2)).bar(b_(1)))/(\|bar(a_(2))\|\|bar(b_(1))\|)`C. `"cos"theta=(bar(b_(1)).bar(b_(2)))/(\|bar(b_(1))\|\|bar(b_(2))\|)`D. `"cos"theta=(bar(a_(1)).bar(a_(2)))/(\|bar(a_(1))\|\|bar(a_(2))\|)`
Answer» Correct Answer - C

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