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@Apu
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Ans is B where is the mistake?
(a x b).c=0 and a.c=0
ig that should get the answer
na man (axb).c wont give anything related to this question
isnt that the condition for coplanarity
It is a vector tripple product ys it is a condition for co planrity but in the que we hve no use for this expression
Becoz that method would be too long
Hey I am kinda confused in this formula, we take (axb).c because a and c are perp? Like the order , how do we determine it?
And what if they don’t give that c is perp to a and such then what will be the condition ?
@Apu any inputs?
(axb).c=0 as area of parallelopiped formed by coplanar vectors is 0 (you can visualize it.) Also a and c are perpendicular so a.c=0
this is the real doubt though 😅
Oh sorry.
Logic is correct ig it would be a calculation error.
Take vector c as k[(axb)xa], k being a constant.
Ah thankyou got it
+solved @SirLancelotDuLac
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