Pomogite po qeometriiiiii!!!!!

Question

Pomogite po qeometriiiiii!!!!!

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Answer 1

∠АВС=90° по условию

∠АВD = 90 * 5/18 = 25°

∠DBC = ∠ABC - ∠ABD = 90 - 25 = 65°

Ответ: Е) 65°.