sinb=msin(2a+b)求证:tan(a+b)=(1+m/1—m)*tanaxiexie
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sinb=msin(2a+b)求证:tan(a+b)=(1+m/1—m)*tanaxiexie
sinb=msin(2a+b)求证:tan(a+b)=(1+m/1—m)*tana
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sinb=msin(2a+b)求证:tan(a+b)=(1+m/1—m)*tanaxiexie
sin(a+b-a)=msin(a+b+a)
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sinb=msin(2a+b)求证:tan(a+b)=(1+m/1—m)*tanaxiexie
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