Respuesta :

Answer:

x = 90, x = -90, x = 270.

Step-by-step explanation:

If we use degrees on the x-axis  one asymptote will be x = 90 as the secant of 90 degrees is undefined  ( sec 90 = 1/cos 90 = 1/0).

There will be further asymptotes  at 90 +/- 180  degrees.