if the angles made by a straight line wi...

if the angles made by a straight line with the coordinate axes are `alpha, pi/2-alpha, beta " then " beta=`

`pi/6`

`pi/2`

`pi`

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DIPTI PUBLICATION ( AP EAMET)-DIRECTION COSINES AND DIRECTION RATIOS-EXERCISE 1

If a line makes angles 60^(@), 60^(@) with the positive x-axis and y-a...
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If a line makes an angle of pi//4with the positive directions of each ...
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if the angles made by a straight line with the coordinate axes are alp...
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If alpha, beta, gamma are the angles made by a line with the positive ...
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If a line in the space makes angles alpha, beta, " and " gamma with th...
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A line makes the same angle theta, with each of the x and z axis. If t...
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A line AB in three-dimensional space makes angles 45^(@) " and " 120^(...
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A straight line is equally inclined to all the three coorinate axes. T...
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The number of lines which are equally inclined to the coordinate axes ...
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The d.c.'s of a line which is equally inclined to the coordinate axes ...
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If the d.r.'s of a line are (3, -4, 12) then d.c.'s of the line are
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The d.c.'s of the line joining the points A(4, 3, 1), B(-2, 1, -2) are
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If (l(1),m(1),n(1)),(l(2),m(2),n(2)) are d.c's of two lines then find ...
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If (2, 1, -1) and (1, -1, -1) are direction ratios of two lines, then ...
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IF the d.r.'s of oversetharr(OA),oversetharr(OB) are (1, -2, -1), (3, ...
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The direction ratios of two lines AB, AC are 1, -1, -1 and 2, -1, 1. T...
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If (a(1), b(1), c(1)), (a(2), b(2), c(2)) are d.r.'s of two perpendicu...
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If (a(1), b(1), c(1)), (a(2), b(2), c(2)) are d.r.'s of two perpendicu...
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If the direction cosines of any two lines are (-2/3, 1/3, 2/3), (3/5, ...
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The angle between the lines whose direction cosines are (sqrt(3)//4, 1...
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