I get how you got -1 from sin(-pi/2) but i'm confused how you got pi. arccos(-1)=pi. But I thought cos(-1) got you pi. So what does Arc do to the equation?
I get how you got -1 from sin(-pi/2) but i'm confused how you got pi. arccos(-1)=pi. But I thought cos(-1) got you pi. So what does Arc do to the equation?
from what you gave me, i was able to do the first problem but im having trouble with the last 2 because i can't find 3/5 on the unit circle. and i don't know what t is supposed to be.
from what you gave me, i was able to do the first problem but im having trouble with the last 2 because i can't find 3/5 on the unit circle. and i don't know what t is supposed to be.