Respuesta:
3
Explicación paso a paso:
cos 60°=1/2
[tex]\sqrt{20.\frac{1}{2} -1}[/tex]
[tex]\sqrt{10-1}[/tex]
[tex]\sqrt{9}[/tex]
[tex]3[/tex]
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Respuesta:
3
Explicación paso a paso:
cos 60°=1/2
[tex]\sqrt{20.\frac{1}{2} -1}[/tex]
[tex]\sqrt{10-1}[/tex]
[tex]\sqrt{9}[/tex]
[tex]3[/tex]