6 JEE Main 2018 Vector Algebra previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2018 previous-year questions from the Vector Algebra chapter of Mathematics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Vector Algebra chapter hub.
If the position vectors of the vertices A, B and C of a ABC are respectively 4 i+7 j+8 k, 2 i+3 j+4 k and 2 i+5 j+7 k,…
Let u → be a vector coplanar with the vectors a → = 2 i ^ + 3 j ^ - k ^ and b → =   j ^ + k ^ .…
An angle between the lines whose direction cosines are given by the equations, l+3 m+5 n= 0 and 5 l m-2 m n+6 n l=0, is
Let a → = i ^ + j ^ + k ^ ,   c → = j ^ - k ^ and a vector b → be such that a → × b &…
If a → ,   b → ,   c → are unit vectors such that a → + 2 b → + 2 c → = 0…
If a, b, and c are unit vectors such that a+2 b+2 c=0, then |a × c| is equal to