Question

A(b,b) is sqrt(18) units from its origin.
find b

Answer 1

This means sqrt(b^2 + b^2) = sqrt 18

Answer 2

Leading to

\[2b^2 = 18\]

Answer 3

\[Distance = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \]

where

\[(b,b) = (x_2,y_2) \]

and

\[(0,0) = (x_1,y_1)\]

Answer 4

since b,b is a 45 degree triangle with a hyp of sqrt(18).... id say b=sqrt(9)=3

Answer 5

give or take some +- signs