Respuesta :

In this case, we'll have to carry out several steps to find the solution.

Step 01:

Data

sin x + 1 = 0​

Step 02:

0 ≤ x< 2π

sin (x) = - 1

x = arc sin (-1)

x = - π / 2

The answer is:

x = - π / 2 = - 90 degrees

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