Odpowiedź :
Odpowiedź:
[tex]x^2+5^2=13^2\\x^2+25=169\\x^2=144\\x=\sqrt{144}=12[/tex]
[tex]cos\alpha=\frac{12}{13}\\tg\alpha=\frac{5}{12}\\ctg\alpha=\frac{12}{5}[/tex]
Odpowiedź:
[tex]x^2+5^2=13^2\\x^2+25=169\\x^2=144\\x=\sqrt{144}=12[/tex]
[tex]cos\alpha=\frac{12}{13}\\tg\alpha=\frac{5}{12}\\ctg\alpha=\frac{12}{5}[/tex]