Question

40 POINTS!

Any help would be greatly appreciated!

Answer 1

`\sin^2x+\sin x=0\\\\\sin x(\sin x+1)=0\iff\sin x=0\ \vee\ \sin x+1=0\\\\\sin x=0\ \vee\ \sin x=-1`
Look at the picture.



`x=0\ \vee\ x=\pi\ \vee\ x=(3\pi)/(2)`