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If vector hat(i)+hat(j)+hat(k), hat(i)-hat(j)+hat(k) and 2hat(i)+3hat(j)+lambda hat(k) are coplanar, then lambda is equal to |
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Answer» `-2` `|{:(1,1,1),(1,-1,1),(2,3,lamda):}|=0` `rArr""2(-lamda-3)-1(lamda-2)+1(3+2)=0` `rArr""-lamda-3 -lamda+2+5=0` `rArr""2lamda=4lamda=2` |
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