Respuesta :

Idea63

Answer: C

x= 2pi/3

Step-by-step explanation:

Ver imagen Idea63

The value of x will be x < π / 2. Then the correct option is B.

What is trigonometry?

The connection between the lengths and angles of a triangular shape is the subject of trigonometry.

The trigonometric inequality is given below.

sec(2x) < –1

We know that 1/cos 2x = sec 2x

1/cos 2x < –1

           1 < –cos 2x

 cos 2x < –1

 cos 2x < cos π

        2x < π

          x < π / 2

Then the correct option is B.

More about the trigonometry link is given below.

https://brainly.com/question/22698523

#SPJ2

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