∵AB=AC,∠A=36°,∴∠C=∠ABC= 1 2 (180°-∠A)=72°,∵DE是AB的垂直平分线,∴AE=BE,∴∠ABE=∠A=36°,∴∠EBC=∠ABC-∠ABE=72°-36°=36°,故选B.