设A,B为钝角,sinA=根号5/5,cosB=-3倍根号10/10,则A+B的值为多少?
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![设A,B为钝角,sinA=根号5/5,cosB=-3倍根号10/10,则A+B的值为多少?](/uploads/image/z/6927702-6-2.jpg?t=%E8%AE%BEA%2CB%E4%B8%BA%E9%92%9D%E8%A7%92%2CsinA%EF%BC%9D%E6%A0%B9%E5%8F%B75%EF%BC%8F5%2CcosB%EF%BC%9D%EF%BC%8D3%E5%80%8D%E6%A0%B9%E5%8F%B710%EF%BC%8F10%2C%E5%88%99A%EF%BC%8BB%E7%9A%84%E5%80%BC%E4%B8%BA%E5%A4%9A%E5%B0%91%3F)
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设A,B为钝角,sinA=根号5/5,cosB=-3倍根号10/10,则A+B的值为多少?
设A,B为钝角,sinA=根号5/5,cosB=-3倍根号10/10,则A+B的值为多少?
设A,B为钝角,sinA=根号5/5,cosB=-3倍根号10/10,则A+B的值为多少?
π/2