oblicz wartość wyrażenia: 2sin^2(45)+7tg(30)*cos (120)= 4(tg(150)-cos(30):(sin(120)+1/tg(60)= (tg(120)-tg(60))^2-(tg(150)+tg(60))^2= sin^3(60)+3sin^2(120)*cos(150)-tg(120)=

oblicz wartość wyrażenia: 2sin^2(45)+7tg(30)*cos (120)= 4(tg(150)-cos(30):(sin(120)+1/tg(60)= (tg(120)-tg(60))^2-(tg(150)+tg(60))^2= sin^3(60)+3sin^2(120)*cos(150)-tg(120)=