题目有问题:∠BAC=35°,求∠BAC?
如果∠BAC=35° 则∠BAD=70° ∠BCD=110°
如果∠BAD=35° 则∠BAC=17.5° ∠BCD=145°
∵∠ABC=∠ADC=90° BC=DC AC=AC
∴△ABC≌△ADC
∴∠BAC=∠DAC
题目有问题:∠BAC=35°,求∠BAC?
如果∠BAC=35° 则∠BAD=70° ∠BCD=110°
如果∠BAD=35° 则∠BAC=17.5° ∠BCD=145°
∵∠ABC=∠ADC=90° BC=DC AC=AC
∴△ABC≌△ADC
∴∠BAC=∠DAC