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已知如图Rt△ABC中∠C=90°按要求填空1∵sinA=∴a=c·sinAc=2∵cosA=∴b=c=3∵tanA=∴a=b=4∵sinB=∴cosB=tanB=5∵cosB=∴sinB=tanA=6∵tanB=3sinB=sinA=
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如图所示直线L过A40和P两点它与y轴交于点B二次函数y=ax2经过点P．1求二次函数的解析式2能否将抛物线y=ax2平移使平移后的抛物线经过点B
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