Question

calcule os valores de sen a, cos a e tg a

Answer 1

$sen( \alpha ) = \frac{cateto \: oposto}{hipotenusa}$

$sen( \alpha ) = \frac{2}{2 \sqrt{5} }$

$sen( \alpha ) = \frac{ \sqrt{5} }{5}$


$cos( \alpha ) = \frac{cateto \: adjacente}{hipotenusa}$


$cos( \alpha ) = \frac{4}{2 \sqrt{5} }$


$cos( \alpha ) = \frac{2}{ \sqrt{5} }$


$cos( \alpha ) = \frac{2 \sqrt{5} }{5}$


$tg( \alpha ) = \frac{cateto \: oposto}{cateto \: adjacente}$


$tg( \alpha ) = \frac{2}{4}$


$tg( \alpha ) = \frac{1}{2}$