Respuesta :

HomertheGenius
sin ( 11π / 8 ) = sin ( π + 3 π/ 8 ) = 
= - sin ( 3π/8 ) = 
= - sin ( 3π/4 / 2 ) = 
[tex]=- \sqrt{ \frac{1-cos(3 \pi /4)}{2} }= \\ =- \sqrt{ \frac{1-(- \sqrt{2}/2 )}{2} }= \\ = - \sqrt{ \frac{2+ \sqrt{2} }{4} } [/tex]
Answer: B ) is correct