Respuesta :

Answer:

√2.

Step-by-step explanation:

sec ^2x = 1 + tan^2 x

(-3)^2 = 1 + tan^2x

tan^2 x = 8

tan x = +/- 2√2

tan x/2 =  tanx / sec x + 1

= -2√2 /  -3 + 1

= -2√2 / -2

= √2

We take the negative tan  because tan is negative in the second quadrant.