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Let x,y an z be positive real numbers. S...

Let x,y an z be positive real numbers. Suppose x, y and z are the length of the sides of triangle opposite ot its angles, X,Y and Z respectively.If
`"tan" (X)/(2)+"tan"(Z)/(2)=(2y)/(x+y+x)` then which of the following statement is/are TURE ?

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