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Recent questions tagged direction cosines
+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
+1
vote
1
answer
Show that the line joining the origin to the point (2, 1, 1) is perpendicular to the line determined by the points (3, 5, −1), (4, 3, −1).
asked
Mar 29, 2019
in
Class 12
by
kratos
direction cosines
directions ratios
class-12
three dimensional geometry
+1
vote
1
answer
The direction cosines of the x-axis are : (a) (0,0,0) (b) (1,0,0) (c) (0,1,0) (d) (0,0,1)
asked
Mar 19, 2019
in
Class 12
by
kratos
class-12
directions ratios
three dimensional geometry
direction cosines
+2
votes
1
answer
The equation of line through (α,β,γ) and equality inclined to the axes are : (a) x - α = y - β = z - γ (b) (x - 1)/α = (y - 1)/β = (z - 1)/γ
asked
Mar 18, 2019
in
JEE
by
kratos
irodov
oscillations and wave
jee
direction cosines
bseb model set
jee mains
elastic waves
class-12
straight line in space
directions ratios
+1
vote
1
answer
Find the direction ratios and direction cosines of the line joining the points (–4, 1, 7), (2, –3, 2).
asked
Mar 9, 2019
in
JEE
by
kratos
directions ratios
jee
straight line in space
direction cosines
jee mains
class-12
fundamental concepts of three dimensional geometry
three dimensional geometry
+1
vote
1
answer
Given nl = 28, * = 144, and there are total 9 terms. Find a
asked
Jan 31, 2019
in
Class 12
by
kratos
arithmetic progression
circles
direction cosines
class-7
class-10
class-12
direct and inverse proportion
directions ratios
+1
vote
1
answer
Show that the line joining the points (2, 3, –4), (–3, 3, –2) is not perpendicular to the line joining the points (–1, 4, 2), (3, 5, 1).
asked
Jan 17, 2019
in
Class 12
by
kratos
three dimensional geometry
straight line in space
direction cosines
class-12
fundamental concepts of three dimensional geometry
directions ratios
+1
vote
1
answer
Find the equation of the plane with intercept 4 on z-axis and parallel to xoy plane.
asked
Jan 14, 2019
in
Class 12
by
kratos
system of particles
the plane
rotational motion
neet
motion of system of particles
class-11
circles
rigid bodies
direction cosines
class-10
icse
class-12
directions ratios
+3
votes
1
answer
Find the angle between two lines which are nonparallel and whose direction cosines are related by the equations
asked
Jan 14, 2019
in
Class 12
by
kratos
directions ratios
class-12
direction cosines
+3
votes
1
answer
If a line makes angle 90°, 60° and 30° with positive direction of x, y and z axis respectively.
asked
Dec 30, 2018
in
Class 12
by
kratos
vector algebra
three dimensional geometry
class-11
direction cosines
class-12
directions ratios
+2
votes
1
answer
The DCs of two lines satisfy the equations 2l + 2m - n = 0 and mn + nl + lm = 0. Show that the two lines are at
asked
Dec 28, 2018
in
JEE
by
kratos
three dimensional geometry
jee
direction cosines
jee mains
class-12
directions ratios
+2
votes
1
answer
Given nl = 28, * = 144, and there are total 9 terms. Find a:
asked
Dec 25, 2018
in
Class 12
by
kratos
arithmetic progression
circles
direction cosines
class-7
class-10
class-12
direct and inverse proportion
directions ratios
+1
vote
1
answer
Given nl = 28, * = 144, and there are total 9 terms. Find a.
asked
Dec 23, 2018
in
Class 12
by
kratos
arithmetic progression
circles
direction cosines
class-7
class-10
class-12
direct and inverse proportion
directions ratios
+2
votes
1
answer
Direction cosines l, m, n of a line which are connected by the relations l + m + n = 0, 2mn + 2ml – nl = 0 may be
asked
Dec 15, 2018
in
JEE
by
kratos
directions ratios
jee
direction cosines
jee mains
class-12
three dimensional geometry
+1
vote
1
answer
Show that the points (–2, 3, 5), (1, 2, 3), (7, 0, –1) are collinear.
asked
Dec 12, 2018
in
Class 12
by
kratos
vector algebra
direction cosines
class-9
determinants
coordinate geometry
class-12
directions ratios
+2
votes
1
answer
Show that the line joining the origin to the point (2, 1, 1) is perpendicular to the line determined by
asked
Dec 2, 2018
in
Class 12
by
kratos
direction cosines
directions ratios
class-12
three dimensional geometry
+2
votes
1
answer
Show that the points A (– 2, 3, 5), B (1, 2, 3) and C(7, 0, – 1) are collinear.
asked
Nov 21, 2018
in
Class 12
by
kratos
vector algebra
direction cosines
class-9
determinants
coordinate geometry
class-12
directions ratios
+3
votes
1
answer
∫ e^ln x -e^4ln x / e^3ln x - e^2ln x dx is equal to
asked
Nov 2, 2018
in
JEE
by
kratos
jee
definite integral
direction cosines
indefinite integration
jee mains
class-12
directions ratios
+2
votes
1
answer
A triangular block of mass M with angles 30°, 60° and 90° rest with its 30° – 90° side on a horizontal table.
asked
Oct 27, 2018
in
JEE
by
kratos
direction cosines
areas of parallelograms
class-12
jee mains
triangles
mechanics
jee
directions ratios
class-9
+3
votes
1
answer
The angle between the lines whose direction cosines are grven by 2l - m + zn = O, lm + mn + nl = 0 is
asked
Oct 17, 2018
in
Class 12
by
kratos
class-12
directions ratios
three dimensional geometry
direction cosines
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