x,y,z are reflex angles of angleA ,B,C in a triangle ABC,the value of x+y+z is equal to :
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X+y+z
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x+y+z =900°
Step-by-step explanation:[A] +[B]+[C] =180°. Then X =360°-[A] and
Y =360°-[B] , Z =360°-[C] sum of x,y,z X+Y+Z =1080°-180° then 900°
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