The coordinates of the points R,S AND T are (2,a),(9,0)and(-1,4) respectively. Find the value of a if RS=RT

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pramodpandey | College Teacher | (Level 3) Valedictorian

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Apply distance formula



RS=`sqrt((9-2)^2+(0-a)^2)`       (i)

RT=`sqrt((-1-2)^2+(4-a)^2)`     (ii)

By given condition


squaring both side ,we have






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