b = przyprostokątna przyległa = 12
cos 30° = b/c
c = b/cos 30° = [tex]\frac{12}{\frac{\sqrt{3} }{2} } = \frac{6}{\sqrt{3} } } = \frac{6}{\frac{3} {\sqrt{3} } } = 2\sqrt{3}[/tex]
sin 30° = a/c
a = c sin 30° = [tex]2\sqrt{3} * \frac{1}{2} = \sqrt{3}[/tex]
