Questions
The direction cosines of the lines bisecting the angles between two concurrent lines having direction ratios are
a
23210,40210,5210;16,−26,−16
b
13210,4210,5210;16,−26,−16
c
25714,8714,5714;111050,−201050,−231050
d
None
detailed solution
Correct option is B
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Angle between the lines whose direction ratios are a,b,c and is
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