4.
下列命题正确的个数为( )
\(①\)命题“若\(x\ne 1\),则\({{x}^{2}}-3x+2\ne 0\)”的逆否命题是“若\({{x}^{2}}-3x+2=0\),则\(x=1\)”
\(②\)若命题\(P\):\(\forall x\in R,{{x}^{2}}+x+1\ne 0,\)则\({}^{\neg }p:\exists x\in R,{{x}^{2}}+x+1=0\)
\(③\)若\(p\vee q\)为真命题,则\(p\),\(q\)均为真命题
\(④\)“\(x > 3\)”是“\({{x}^{2}}-3x+2 > 0\)”的充分不必要条件
\(⑤\)在\(\triangle \)\(ABC\)中,若\(A > B\),则\(\sin A > \sin B\).