Question

Reduzca: F = cec²x - tg²x - cos²x


no me sale el resultado plis ayuda​

Answer 1

Respuesta:

$= \frac{1}{ { \cos ^{2} (x) } } - \frac{ \sin^{2} (x) }{\cos^{2} (x)} - { \cos}^{2} (x) \\ = \frac{1 -\sin^{2} (x)}{\cos^{2} (x)} - \cos^{2} (x) \\ = \frac{\cos^{2} (x)} {\cos^{2} (x)} - \cos^{2} (x) \\ = 1 - \cos^{2} (x) \\ = \sin^{2} (x)$