Question

please help...
For what x-value(s) does sin(x) = -1?


-270°, -90°, 90°, and 270°

-270°, -90°, 0°, 90°, and 270°

-90 and 270°

-270° and 90°

Answer 1

ok, where are you confused?

Answer 2

all of it i dont understand how to determine the answer

Answer 3

well, do you have a calculator?

Answer 4

do my class is online and they didnt say i needed one for it

Answer 5

ok then. Have you learned about the unit circle?

Answer 6

so* not do

Answer 7

yes but its been awhile since i have done it

Answer 8

so, google the unit circle and find the degrees where sin(x)=-1 remember on the unit circle (x,y) =(cosx,sinx)