[tex]tgL = \frac{7}{3}\\\\ctgL = \frac{1}{tgL} = \boxed{\frac{3}{7}}}, \ czyli:\\\\a = 7\\\\b = 3\\\\c=\sqrt{a^{2}+b^{2}} = \sqrt{4^{2}+3^{2}} = \sqrt{16+9} = \sqrt{25} = 5\\\\sinL = \frac{a}{c} =\boxed{ \frac{4}{5}}\\\\cosL = \frac{b}{c} =\boxed{ \frac{3}{5}}[/tex]
