The coordinates are .
The distance is .
Find the value of :
(Distance formula)
(Substitute
,
and
)
(Subtract:
and
)
(Evaluate powers:
and
)
(Take the square root of each side)
(Cancel squares and roots)
(Subtract
from each side)
(Apply additive inverse property:
)
(Subtraction:
)
(Take the square root of each side)
(Cancel squares and roots)
(Subtitute:
)
The possible values of are
or
.
\
The possible values of are
or
.