Question

Calcule o valor das expressões

Answer 1

A

Sen π/3 = $\frac{ \sqrt{3} }{2}$

Sen 2π = 0

Sen π/4 = $\frac{ \sqrt{2} }{2}$

$\frac{ \frac{ \sqrt{3} }{2} + 0}{ \frac{ \sqrt{2} }{2} }$

$\frac{ \frac{ \sqrt{3} }{2}}{ \frac{ \sqrt{2} }{2} }$

$\frac{ \sqrt{3} }{ \sqrt{2} }$


Racionalizando o denominador tem-se

$\frac{ \sqrt{3} }{ \sqrt{2} } * \frac{ \sqrt{2} }{ \sqrt{2} } = \frac{ \sqrt{3*2} }{ \sqrt{2*2} } = \frac{ \sqrt{6} }{2}$