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∠EBD=180-(65+55)=60°.
EBD+DBC=EBC=180-EBA=90, ∠DBC=90-60=30°.
∠BDC=180-(30+115)=35°.
Sine Rule:
DC/sinDBC=52/sin30=104=DB/sin115, DB=104sin115=94.256 approx.
Note that sin65=sin115. Also, ∠EDC=90°.
DB/sin65=EB/sin55, EB=DBsin55/sin65=85.192 approx.
EB/x=sin70, x=85.192/sin70=90.659 approx.
Note that x is not an angle but a side. x=91 to the nearest whole number.