Recent questions tagged directions ratios

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

+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

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