kat-alpha-jest-ostry-i-displaystyle-cosalpha-frac37-wtedy

$\displaystyle \sin\alpha= \frac{2\sqrt{10}}{7}$\displaystyle \sin\alpha= \frac{2\sqrt{10}}{7}

$\displaystyle \sin\alpha= \frac{\sqrt{10}}{7}$\displaystyle \sin\alpha= \frac{\sqrt{10}}{7}

$\displaystyle \sin\alpha= \frac{4}{7}$\displaystyle \sin\alpha= \frac{4}{7}

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