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°

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°

fibonaccichick666 · Answer

ok, where are you confused?

anonymous · Answer

all of it i dont understand how to determine the answer

fibonaccichick666 · Answer

well, do you have a calculator?

anonymous · Answer

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

fibonaccichick666 · Answer

ok then.  Have you learned about the unit circle?

anonymous · Answer

so* not do

anonymous · Answer

yes but its been awhile since i have done it

fibonaccichick666 · Answer

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