Oblicz a)[latex]2 sin 60 * cos30-2ctg45[/latex] b) [latex]{sin^{2}45+cos60}{sin30 * cos30}[/latex] c) [latex]{tg60}{cos60}-frac{sin45}{cos45})^{2}[/latex] d) [latex]{sin30*tg60+cos30}{ctg60}[/latex]

Oblicz a)[latex]2 sin 60 * cos30-2ctg45[/latex] b) [latex]{sin^{2}45+cos60}{sin30 * cos30}[/latex] c) [latex]{tg60}{cos60}-frac{sin45}{cos45})^{2}[/latex] d) [latex]{sin30*tg60+cos30}{ctg60}[/latex]