Questions  

In the  Δ​ABC if AB=2,  AC=20, B = (3,2,0) and C = (0,1,4) then the length  of the median passing through A is

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ctaimg
a
32
b
92
c
32
d
32
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detailed solution

Correct option is C

BC=9+1+16=26 a=BC,b=CA,c=ABlength of median=2b2+2c2-a24


ctaimg

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