l = m = n = 1 represents the direction cosines of: - Vidyadip

MCQ

$l = m = n = 1$ represents the direction cosines of:

A
$x-$axis
B
$y-$axis
C
$z-$axis
✓
None of these

✓

Answer

Correct option: D.

None of these

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Three Dimensional Geometry→Three Dimensional Geometry — all question types→Maths STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Find the values of $a, b, c$ and $d$ respectively if $\left[\begin{array}{cc}2 a+b & a-2 b \\ 5 c-d & 4 c+3 d\end{array}\right]=\left[\begin{array}{cc}4 & -3 \\ 11 & 24\end{array}\right]$.

If $f(x) = \frac{{1 - x}}{{1 + x}},$ then $f[f(\cos \;2\theta )] = $

The differential equation of all parabolas whose axes are parallel to $y$-axis is

Choose the correct answer from the given four option.The solution of $\frac{\text{d}\text{y}}{\text{d}\text{x}}+\text{y}=\text{e}^{\text{-x}},\text{ y}(0)$ is:

Choose the correct answer from the given four options.Which of the following is the general solution of $\frac{\text{d}^2\text{y}}{\text{d}\text{x}^2}-2\frac{\text{d}\text{y}}{\text{d}\text{x}}+\text{y}=0?$

If $y = \sqrt {{{1 + \tan x} \over {1 - \tan x}}} $, then ${{dy} \over {dx}} = $

The solution of the equation $\frac{d y}{d x}+2 x=e^{3 x}$ is :

$\int\frac{\text{dx}}{\sqrt{\text{x}}}=$

If $f(x)\, = \,2\,{\tan ^{ - 1}}\,x\, + \,{\sin ^{ - 1}}\,\left( {\frac{{2x}}{{1 + {x^2}}}} \right),x > 1\,$ then $f\,(5)$ is equal to

$\int_{}^{} {\frac{{x{e^x}}}{{{{(1 + x)}^2}}}dx = } $