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[" 93.In a triangle "ABC," if "(1)/(a+c)...

[" 93.In a triangle "ABC," if "(1)/(a+c)+(1)/(b+c)=(3)/(a+b+c)],[" then angle "C" is equal to "],[[" A) "30^(@)quad " (B) "60^(@)," (C) "90^(@)" (BCECE 2015) "]]

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