Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Need solution for RD Sharma maths class 12 chapter 28 The Plane exercise Fill in the blank question 11

Need solution for RD Sharma maths class 12 chapter 28 The Plane exercise Fill in the blank question 11

Answers (1)

Answer:

 -4

Hint:

 Use vector dot product

Given:

 \frac{2x-1}{2}=\frac{2-y}{2}=\frac{2+z}{k}

is parallel to the plane 2x - y + z = 3

Solution:

\begin{aligned} &\frac{x-x_{1}}{a}=\frac{y-y_{1}}{b}=\frac{z-z_{1}}{c}\\ &\Rightarrow \frac{x-\frac{1}{2}}{1}=\frac{y-2}{-2}=\frac{z+1}{9}\\ &\vec{x}=2\hat{i}-\hat{j}+\hat{k}, \quad \vec{b}=\hat{i}-2\hat{j}+\hat{k}\\ &\vec{x}.\vec{b}=0\Rightarrow 2+2+k=0\Rightarrow k=-4 \end{aligned}

 

 

 

Posted by

Gurleen Kaur

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE to issue revised Class-12 physical marksheets through regional offices
anam-khan

NEET aspirant Aditya Mishra becomes CBSE Science topper after re-evaluation
anam-khan

From 95.2% to 100%: CBSE Class 12 topper Avni Kejriwal's marks rise after re-evaluation

Latest Question