解答:解:因为BD∥AE,所以∠DBA=∠BAE=57°.所以∠ABC=∠DBC-∠DBA=82°-57°=25°.在△ABC中,∠BAC=∠BAE+∠CAE=57°+15°=72°,所以∠C=180°-∠ABC-∠BAC=180°-25°-72°=83°.