In given triangle AOB
AO=12
OC=6
AC=BC
FIND OB
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PC is 6 then
In triangle aco
Ao*2=oC*2 +AC*2
12*2=6*2 +AC*2
Ac*2=144-36
Ac=√108
Ac=6√2
Now ac=BC=6√2
Now in triangle of ocb
Oc*2+bc*2=Bo*2
36+72=Bo*2
Bo=6√2
In triangle aco
Ao*2=oC*2 +AC*2
12*2=6*2 +AC*2
Ac*2=144-36
Ac=√108
Ac=6√2
Now ac=BC=6√2
Now in triangle of ocb
Oc*2+bc*2=Bo*2
36+72=Bo*2
Bo=6√2
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