Question

Solve sin(x)(sinx + 1)=0

Answer 1

Break it up into two problems b/c if either one equals 0, the entire thing equals 0.
First, sinx = 0. Which angle(s) give us 0?
Second, sinx + 1 = 0 ---> sinx = -1. Which angle(s) give us a sin of -1?

Answer 2

\[a. x=\pm \pi n,x=\pi/2\pm2\pi n\]

Answer 3

\[b. x=\pi/2\pm2\pi n,x=3\pi/2\pm \pi n\]

Answer 4

\[c. x=\pm \pi n\]

Answer 5

\[d. x=\pm \pi n,x=3\pi/2\pm2\pi n\]

Answer 6

those are the answer options

Answer 7

Go through each answer choice and use what I said. You only have to use the first angle given to get your answer.

Answer 8

so the answer is b

Answer 9

No.

Answer 10

If it was b, sin(pi/2) = 1, which does not equal zero or -1.