如图,已知四边形ABCD中,AD=4,CD=3,AB=AC,
![](https://img.xkw.com/dksih/QBM/2015/7/9/1573866844438528/1573866850426880/STEM/f54518bfb25b49c79f5b9b1ad0ae1baa.png)
![](https://img.xkw.com/dksih/QBM/2015/7/9/1573866844438528/1573866850426880/STEM/48e623ca98fc4d379bcc204f8cbdc8a7.png)
(1)如图1,若∠CAB=60°,∠ADC=30°,求BD的长;
(2)如图2,若∠CAB=90°,∠ADC=45°,求BD的长.
![](https://img.xkw.com/dksih/QBM/2015/7/9/1573866844438528/1573866850426880/STEM/f54518bfb25b49c79f5b9b1ad0ae1baa.png)
![](https://img.xkw.com/dksih/QBM/2015/7/9/1573866844438528/1573866850426880/STEM/48e623ca98fc4d379bcc204f8cbdc8a7.png)
(1)如图1,若∠CAB=60°,∠ADC=30°,求BD的长;
(2)如图2,若∠CAB=90°,∠ADC=45°,求BD的长.
更新时间:2016-12-06 01:03:12
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名校
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