kat-alpha-jest-ostry-i-displaystyle-cosalpha-frac45-wtedy

A)

$\displaystyle \tg\alpha= \frac{3}{4}$ \displaystyle \tg\alpha= \frac{3}{4}

B)

$\displaystyle \tg\alpha= \frac{4}{5}$ \displaystyle \tg\alpha= \frac{4}{5}

C)

$\displaystyle \sin\alpha= \frac{1}{5 }$ \displaystyle \sin\alpha= \frac{1}{5 }

D)

$\displaystyle \sin\alpha= \frac{4}{5}$ \displaystyle \sin\alpha= \frac{4}{5}