Three Dimensional Geometry
Let ΔABC is 11b+c=12c+a=12a+b (where AB=c,BC=aandAC=b) and αcosA=βcosB=γcosC then possible ordered tripblet of (α,β,γ) is (A) (9,17,25) (B) (19,7,25) (C) (7,19,25) (D) (19,25,7)
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If (a1,b1,c1 and (a2,b2,c2) be the direction ratios of two parallel lines then
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