синус-12/13

косинус-5/13

тангенс-12/5

[tex] \sin( \beta ) = \frac{ac}{bc} = \frac{12}{13} \\ \cos( \beta ) = \frac{ab}{bc} = \frac{5}{ 13} \\ \tan( \beta ) = \frac{ac}{ab} = \frac{12}{5} = 2 \frac{2}{5} = 2.4[/tex]