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[" 22.If "a,b,c" are the sides of a tria...

[" 22.If "a,b,c" are the sides of a triangle "ABC" and "3a=b+c," then "cot(B)/(2)(d)135^(@)],[[" (a) "1," (b) "sqrt(3)," (c) "2," (d) "sqrt(2)]],[" 23.If "/_B=60^(@)" ,then : "]

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