Question

Quanto que dá sen90° + cos120°/ sen 150°

Answer 1

Boa tarde Blondie!

Solução!

$Sen(90\º)=1 \\\\\\ Cos(120\º)= -\dfrac{1}{2} \\\\\\ Seno(150\º)= \dfrac{1}{2}$

$\dfrac{Seno(90\º)+Cos(120\º)}{Seno(150\º)}\\\\\ \dfrac{1- \dfrac{1}{2} }{ \dfrac{1}{2} }\\\\\\\\\ \dfrac{\dfrac{2-1}{2} }{\dfrac{1}{2}}\\\\\\\ \dfrac{ \dfrac{1}{2}}{\dfrac{1}{2}}\\\\\\ \dfrac{1}{2}\times \dfrac{2}{1}=1$

Boa tarde!
Bons estudos!