Question

Por favor preciso para hoje...
Simplificar
y= (Cossec X - Sen X) / ( Sec X - Cos X)

Answer 1

ficaria
$= \frac{Cossecx-senx}{secx-cosx} \\\\ = \frac{(1/senx) -senx}{(1/cosx)-cosx}\\\\ = \frac{sen^2x-1/senx}{cos^2x-1/cosx}\\\\ = \frac{sen^2x-1}{senx}* \frac{cos^2x-1}{cosx}\\\\ =senx-1*cosx-1\\ =-1(senx*cosx)$