已知θ是钝角三角形中的最小角，则sin(θ＋)的取值范围是( ) A．(

已知θ是钝角三角形中的最小角，则sin(θ＋)的取值范围是(　 )

A．(，1] B．[，1] C．(，1) D．[，1]

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已知θ是钝角三角形中的最小角，则sin(θ＋)的取值范围是( ) A．(

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