Respuesta :

Kmieteczka
[tex]sinx=0,5=\frac{1}{2}[/tex]

[tex]sin^2x+cos^2x=1[/tex]
[tex](\frac{1}{2})^2+cos^2x=1[/tex]
[tex]\frac{1}{4}+cos^2x=1[/tex]
[tex]cos^2x=\frac{3}{4}[/tex]
[tex]cosx=\frac{\sqrt{3}}{2}[/tex]
or
[tex]cosx=-\frac{\sqrt{3}}{2}[/tex]

:)
charmander574

Answer:

the answer is 0.86603

hope this helps

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