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If a line makes angles `alpha,betaa n dgamma` with threew-dimensional coordinate axes, respectively, then find the value of `cos2alpha+cos2beta+cos2gammadot`

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CENGAGE ENGLISH-THREE DIMENSIONAL GEOMETRY-All Questions
  1. Find the distance of the point P(a ,b ,c) from the x-axis.

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  2. A line makes angles alpha,betaa n dgamma with the coordinate axes. If ...

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  3. If a line makes angles alpha,betaa n dgamma with threew-dimensional ...

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  4. Find the distance between the parallel planes x+2y-2z+1=0a n d2x+4y...

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  5. A ray of light passing through the point A(1,2,3) , strikews the pl...

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  6. The plane a x+b y=0 is rotated through an angle alpha about its line...

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  7. Find the equation of a plane containing the line of intersection of...

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  8. Find the locus of a point, the sum of squares of whose distance from t...

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  9. Find the length and the foot of the perpendicular from the point (7...

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  10. Find the angle between the lines vec r= dot( hat i+2 hat j- hat k)+la...

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  11. Find the equation of the projection of the line (x-1)/(2)=(y+1)/(-1)=(...

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  12. Find the equation the plane which contain the line of intersection ...

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

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  14. Find the distance of the point P(3,8,2) from the line 1/2(x-1)=1/4(...

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  15. Find the distance of the point (1,0,-3) from the plane x-y-z=9 meas...

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  16. Show that a x+b y+r=0,b y+c z+p=0a n dc z+a x+q=0 are perpendicular to...

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  17. Reduce the equation of line x-y+2z=5a d n3x+y+z=6 in symmetrical fo...

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  18. Find the angle between the lines x-3y-4=0,4y-z+5=0a n dx+3y-11=0,2y...

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  19. If the line x=y=z intersect the line sin Adotx+sin Bdoty+sin Cdotz=2d^...

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  20. The point of intersecting of the line passing through (0, 0, 1) and in...

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