If O is The Origin And The Coordinates Of A and B are (51, 65) And (75, 81) Respectively. Then  is Equal To

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If O is the origin and the coordinates of A and B are (51, 65) and (75, 81) respectively. then  is equal to


Correct option is


    (OA)2 = (51)2 + (65)2, (OB)2 = (75)2 + (81)2

    (AB)2 = (75 – 51)2 + (81 – 65)2

And from triangle OAB





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