Question

the distance between the point (0,a) and (5, 12) is 13 then the value of a​

Answer 1

(x2−x1)2+(y2−y1)2

Here x1=0, y1=0

x2= -5, y2=12

Now substitute the values in the formula:-

\sqrt{( - 5 - 0) { }^{2} + (12 - 0) { }^{2} }(−5−0)2+(12−0)2

\sqrt{25 + 144}25+144

\sqrt{169}169

= 13

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