Question

simplificar la expresión csc A(1-cos2A)

Answer 1

csc A(1-cos2A)
$\frac{1}{senA}$(1 - cos 2A)
$\frac{1}{senA}$ -$\frac{cos2A}{senA}$

$\frac{1}{senA}$ - $\frac{1-2sen^{2}A}{senA}$
$\frac{1-1 +2sen^{2}A}{senA}$
$\frac{2sen^{2}A}{senA}$
2senA