The angle between the two lines y - 2x = 9 and x + 2y = - ;7, is … - Vidyadip

MCQ

The angle between the two lines $y - 2x = 9$ and $x + 2y = - \;7,$ is .....$^o$

A
${60}$
B
${30}$
✓
${90}$
D
${45}$

✓

Answer

Correct option: C.

${90}$

c
(c)These are perpendicular lines because ${m_1}{m_2} = (2)\left( {\frac{{ - 1}}{2}} \right) = - 1$

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 STD 11 - 9. straight line→STD 11 - 9. straight line — all question types→Maths STD 11 Science question papers→CBSE Board STD 11 Science question papers→CBSE Board question paper generator→

Similar questions

If $4{\sin ^4}x + {\cos ^4}x = 1,$ then $x =$

If $\frac{{\left| {3z - i} \right|}}{{\left| {4z - 2 + 3i} \right|}} = K\,\left( {K\, \in \,{R^ + }} \right)$ represent the straight line then value of $K$ is

If $4{\sin ^2}\theta + 2(\sqrt 3 + 1)\cos \theta = 4 + \sqrt 3 $, then the general value of $\theta $ is

For all real values of $\text{x},\cot\text{x}-2\cot\text{}$ is equal to:

Name three undefined terms:

If $^{2n}{C_3}:{\,^n}{C_2} = 44:3$, then for which of the following values of $r$, the value of $^n{C_r}$ will be 15

If $A$ and $B$ are two sets, then $A × B = B × A$ iff

If $\tan\alpha=\frac{\text{x}}{\text{x}+1}$ and $\tan\beta=\frac{1}{2\text{x}+1},$ then $\alpha+\beta$ is equal to:

Consider the following frequency distribution :

Class:	$0-6$	$6-12$	$12-18$	$18-24$	$24-30$
Frequency :	$a$	$b$	$12$	$9$	$5$

If mean $=\frac{309}{22}$ and median $=14$, than value $(a-b)^{2}$ is equal to $.....$

The points $(0,{\rm{ }}0),\;(a,{\rm{ }}0)$ and $\left( {\frac{a}{2},\,\frac{{a\sqrt 3 }}{2}} \right)$ are vertices of