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  • Provide solution for RD Sharma maths class 12 chapter 28 The Plane exercise Fill in the blank question 6

Provide solution for RD Sharma maths class 12 chapter 28 The Plane exercise Fill in the blank question 6

Answers (1)

Answer:

 3, -9

Hint:

 Solve using fraction method.

Given:

 (1,1,1) is half distance fromx + 2y + z + k = 0

Solution:

\begin{aligned} &\sqrt{3}=\frac{1}{2}\left [ \frac{3+k}{\sqrt{3}} \right ]\\ &3=\pm \frac{1}{2}(3+k)\\ &3+k=\pm 6\\ &3+k=6 \qquad 3+k=6\\ &k=3 \qquad \qquad k=-9 \end{aligned}

Posted by

Gurleen Kaur

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