若A B为锐角三角形ABC的两锐角,则P(sinB-cosA,cosB-sinA)在——象限若A B为锐角三角形ABC的两锐角,则P(sinB-cosA,cosB-sinA)在?象限 (不要带数字)!
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![若A B为锐角三角形ABC的两锐角,则P(sinB-cosA,cosB-sinA)在——象限若A B为锐角三角形ABC的两锐角,则P(sinB-cosA,cosB-sinA)在?象限 (不要带数字)!](/uploads/image/z/5472802-10-2.jpg?t=%E8%8B%A5A+B%E4%B8%BA%E9%94%90%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E4%B8%A4%E9%94%90%E8%A7%92%2C%E5%88%99P%28sinB-cosA%2CcosB-sinA%29%E5%9C%A8%E2%80%94%E2%80%94%E8%B1%A1%E9%99%90%E8%8B%A5A+B%E4%B8%BA%E9%94%90%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E4%B8%A4%E9%94%90%E8%A7%92%2C%E5%88%99P%28sinB-cosA%2CcosB-sinA%29%E5%9C%A8%3F%E8%B1%A1%E9%99%90+%EF%BC%88%E4%B8%8D%E8%A6%81%E5%B8%A6%E6%95%B0%E5%AD%97%EF%BC%89%21)
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