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Find the direction cosine of the perpend...

Find the direction cosine of the perpendicular from origin to plane `vec(r)*(hat(i)+2hat(j)-2hat(k))=18`

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The correct Answer is:
`lt1/3,2/3,(-2)/(3)gt`
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BETTER CHOICE PUBLICATION-THREE DIMENSIONAL GEOMETRY -ASSIGNMENT MOST IMPORTANT QUESTIONS FOR PRACTICE (SECTION VI) Short Answer Type Questions
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  5. Find the intercepts cut off by the plane x+2y-2z=9 with the axes.

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  9. Find the angle between the following planes 3x-6y-2z=7 and 2x+y-2z=5

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  18. Find the equation of the through to the line of intersection of the pl...

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