Question

Solve
sin x(sin x + 1 )=0

Answer 1

either sin x = 0 or sinx = -1

there are a few solutions between 0 and 360 degrees

sin x = 0 gives x = 0, 180 and 360 degrees
sin x = -1 gives x = 270 degres

Answer 2

ok ?

Answer 3

yes. Thank you.