The vector B=5i+2j-;a;k is perpendicular to the vector A=3i+j+2k. Find ‘a’
The vector B=5i+2j-;a;k is perpendicular to the vector A=3i+j+2k. Find ‘a’
prakhar , 8 Years ago
Grade 11
Mechanics> The vector B=5i+2j-;a;k is perpendicular ...
1 Answers
Aman gohel
As vector A is perpendicular to B,Therefore,A.B=0=>(5*3)+(2*1)+(-a*2)=0=>15+2-2a=0=>a=17/2(Ans)[Please approve my answer]
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