Resposta:
Olá bom dia!
Utilize π = 180°
E faça regra de 3.
π = 180
[tex]\frac{\pi }{7} = x[/tex]
[tex]\pi .x = \frac{180\pi }{7} \\\\x = \frac{180}{7} \\\\x = 25, 71^o[/tex]
