Question 106265
Since you don't say which distances you need, I will go ahead and do all;
first;
distance between E and A;
{{{D=sqrt((0-5)^2+(7-(-5))^2)}}}
{{{D=sqrt((-5)^2+(12)^2)}}}
{{{D=sqrt(25+144)}}}
{{{D=sqrt(169)}}}
D=13
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Distance between E and T;
{{{D=sqrt((0-10)^2+(7-7)^2)}}}
{{{D=sqrt(-10^2+0^2)}}}
{{{D=sqrt(100)}}}
D=10
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distance between A and T;
{{{D=sqrt((5-10)^2+(-5-7)^2)}}}
{{{D=sqrt((-5)^2+(-12)^2)}}}
{{{D=sqrt(25+144)}}}
{{{D=sqrt(169)}}}
D=13
:)