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Recent questions tagged vector algebra
+2
votes
1
answer
The vector a and vector b are not perpendicular and vector c and vector d are two vectors satisfying,
asked
Apr 7, 2019
in
JEE
by
kratos
jee
jee mains
vector algebra
+2
votes
1
answer
Let a, b and c be three unit vectors such that a x ( b x c) = √3/2 ( b + c). If b is not parallel to c, then the angle between a and b is
asked
Apr 7, 2019
in
JEE
by
kratos
vector algebra
class-11
jee
jee mains
class-12
+1
vote
1
answer
What is the cosine of the angle which the vector √2i+j+k makes with y-axis?
asked
Apr 6, 2019
in
JEE
by
kratos
class-12
jee
jee mains
vector algebra
+3
votes
1
answer
The distance of the point having position vector -i + 2j + 6k from the straight line passing through the point , 6i + 3j - 4k is :
asked
Apr 5, 2019
in
Class 12
by
kratos
class-12
vector algebra
scalar triple product
cross product
vector
cbse
scalar or dot products
+1
vote
1
answer
Which of the following expressions are meaningfull question ?
asked
Apr 4, 2019
in
Mathematics
by
kratos
physics
vector algebra
maths
class-11
jee
vectors
calculus
jee mains
class-12
science
+1
vote
1
answer
Let vector a, b and c be three unit vectors such that vetor |a + b + c| = √3 and vector (a x b).(b x c) + (b x c).(c x a) + (c x a).(a x b) .
asked
Apr 4, 2019
in
JEE
by
kratos
vector algebra
cross product
jee
class-12
jee mains
scalar or dot products
vector
+2
votes
1
answer
Find the unit vector in the direction of vector AB if the position vectors of A, B are 2i + 4j - k, 4i +5j + k
asked
Apr 3, 2019
in
JEE
by
kratos
vector algebra
class-11
jee
scalar triple product
jee mains
vector
scalar or dot products
class-12
+1
vote
1
answer
If vector a, b, c and d are unit vectors such that (a x b).(c x d) = 1 and a.c = 1/2, then
asked
Apr 3, 2019
in
JEE
by
kratos
jee
jee mains
vector algebra
+2
votes
1
answer
The scalar product of the vector i + j + k with a unit vector along the sum of vectors. 2i + 4j - 5k and λi + 2j + 3k is equal to 1.
asked
Apr 3, 2019
in
Class 12
by
kratos
vector algebra
class-12
cbse
+3
votes
1
answer
Show that the points are A(2i - j + k), B(i - 3j - 5k), C(3i - 4j - 4k) the vertices of a right angled triangle.
asked
Apr 3, 2019
in
JEE
by
kratos
class-12
class-11
jee mains
vector algebra
jee
vectors
+3
votes
1
answer
If a is a nonzero vector of magnitude ‘a’ and λ a nonzero scalar, then λ is unit vector if (A) λ = 1 (B) λ = –1
asked
Apr 2, 2019
in
Class 12
by
kratos
class-12
vector algebra
+2
votes
1
answer
Let u = u1i + u2j + u3k be a unit vector in R3 and vector w = (1/√6)(i + j + k). Given that there exists a vector v
asked
Apr 2, 2019
in
JEE
by
kratos
jee
vectors
jee mains
vector algebra
+1
vote
1
answer
The point with position vectors (2,6), (1,2) and (P,10) are collinear if the value of P is
asked
Apr 2, 2019
in
Class 12
by
kratos
class-12
vector algebra
+3
votes
1
answer
Find the magnitude of each of the vectors (vector) a and (vector) b, having the same magnitude such that the angle
asked
Apr 1, 2019
in
Class 12
by
kratos
vector algebra
cbse
class-12
scalar or dot products
vector
+3
votes
1
answer
If a line makes angles α, β, γ with the x, y and z-axis respectively, then value of cos^2α+ cos^2β + cos^2γ is
asked
Apr 1, 2019
in
JEE
by
kratos
three dimensional geometry
vector algebra
cbse
jee
direction cosines
jee mains
class-12
directions ratios
+3
votes
1
answer
Let a,b ,c be distinct non-negative numbers. If the vectors ai + aj + ck, i + k and ci + cj + bk lie in a plane, then c is
asked
Mar 31, 2019
in
JEE
by
kratos
vector algebra
applications of vector algebra
jee
vectors
jee mains
class-12
+2
votes
1
answer
The line vector r = a x λb will not meet the plane r x n = q, provided (A) b x n = 0, a.n = q
asked
Mar 31, 2019
in
JEE
by
kratos
cbse
vector algebra
jee
jee mains
class-12
+1
vote
1
answer
C is the centrec, AA' and BB' are major and minor axis of the ellipse. x^2/a^2 + y^2/b^2 = 1. If PN is the ordinate of a
asked
Mar 31, 2019
in
JEE
by
kratos
vector algebra
jee main 2021
class-11
jee
jee main
class-12
chemical kinetics
applications of matrices and determinants
+2
votes
1
answer
If \(\vec{a} = \hat{i} + \hat{j} + \hat{k},\; \vec{b} = 2\hat{i} - \hat{j} + 3\hat{k}\) and \(\vec{c} = \hat{i} - 2\hat{j} + \hat{k} \)
asked
Mar 30, 2019
in
Class 12
by
kratos
class-12
vector algebra
+2
votes
1
answer
The ends A , B of a straight line segment of constant length c slide upon the fixed rectangular axes OX ,OY respectively.
asked
Mar 30, 2019
in
JEE
by
kratos
hyperbola
the tangent and normal
vector algebra
jee
class-12
jee main
coordinate geometry
ellipse
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