Get Answers to all your Questions

header-bg qa

Explain solution RD Sharma class 12 chapter 28 The Plane exercise very short answer type question 12 maths

Answers (1)

Answer:

 \overrightarrow{n}=\overrightarrow{b} \times \overrightarrow{c}

Hint:

 Plane parallel to

\overrightarrow{b} \text { and } \overrightarrow{c}

Given:

 \overrightarrow{r}=l\overrightarrow{b}+m\overrightarrow{c}

Solution:

\overrightarrow{r}=l\overrightarrow{b}+m\overrightarrow{c} \qquad \qquad \dots(i)

Plane (i) parallel to

\overrightarrow{b} \text { and } \overrightarrow{c}

Normal vector of (i) ⊥ to be both

\overrightarrow{b} \times \overrightarrow{c}

\overrightarrow{n}=\overrightarrow{b} \times \overrightarrow{c}

Posted by

Gurleen Kaur

View full answer

Crack CUET with india's "Best Teachers"

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