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

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

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