Questions
The direction cosines of the line passing through and the origin are
a
−229,429,329
b
−229,−429,329
c
−229,−429,−329
d
−229,429,−329
detailed solution
Correct option is A
The direction ratios of the line joining the points Ax1,y1,z1 and Bx1,y1,z1 isx2−x1,y2−y1,z2−z1The direction ratios of the line joining the points P−2,4,3,Q0,0,0 is−2,4,3Direction cosines are −24+16+9,44+16+9,34+16+9=−229,429,329Talk to our academic expert!
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The dc’s of the line passing through P and the origin are
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