Question

verificar
cot α × sen α = cos α ​

Answer 1

Explicación paso a paso:

$cot(\alpha )xsen(\alpha )=cos(\alpha )\\\frac{1}{tan(\alpha) } (sen(\alpha)=cos(\alpha )\\ \frac{1}{\frac{sen(\alpha) }{cos(\alpha) }} (sen(\alpha))=cos(\alpha )\\cos(\alpha )=cos(\alpha )$