∠BAC=180°-∠B-∠C=80° ∠BAD=40° ∠ADB=180°-∠B-∠BAD=80° ∠BAE=90°-∠B=30°
∠DAE=∠BAD-∠BAE=40°-30=10°
如图,在△ABC中,AD是角平分线,AE是高,∠B=60°,∠C=40°求∠ADB和∠DAE的度数
如图,在△ABC中,AD是角平分线,AE是高,∠B=60°,∠C=40°求∠ADB和∠DAE的度数
数学人气：164 ℃时间：2019-10-23 07:57:01
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