Respuesta :

[tex]Look\ at\ the\ picture.\\\\cos\alpha=\frac{3}{5};\ cos\alpha=\frac{b}{c}\\\\sin\beta=\frac{b}{c}=cos\alpha\\\\therefore\\\\sin\beta=\frac{3}{5}\\\\Answer:\huge\boxed{\frac{3}{5}}[/tex]
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