,
,
and 
, then we can deduce 
\le 2 $ ?
and 
.
Equality holds when 
or 
or 
has 
,
,
.
be the angle bisector of angle 
such that 
lies on side 
.
at 
and 
at 
.
?
of the numbers 
satisfy 
and 
?
be an odd positive integer satisfying 
with exactly 2 distinct prime factors. Prove that 
that satisfy the following condition: For every integer k such that 
there always exists a positive integer 
that is divisible by n and 
.
:
is drawn externally on side 
.
is taken on 
.
if 
.
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