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Find the equation of a line parallel to x-axis and passing through the origin

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The correct Answer is:
The direction cosines of the x-axis are 1, 0, 0. Therefore we any assume the direction ratios of the required line as 1, 0, 0. Since it passes through the origin, the required equation is `(x-0)/1 = (y-0)/0 = (z-0)/0`
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A N EXCEL PUBLICATION-THREE DIMENSTIONAL GEOMETRY-QUESTION BANK
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  2. Find the angle between the lines whose direction ratios are a, b, c an...

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  3. Find the equation of a line parallel to x-axis and passing through the...

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  4. If the co-ordinates of the points A, B, C, D be (1,2,3),(4,5,7) (-4,3,...

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  15. If O be the origin and the co-ordinates of P be (1,2,-3), then find th...

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  17. Find the distance of the point (-1,-5,-10) from the point of intersecț...

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  18. Find the vector equation of the line passing through (1,2,3) and paral...

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