Question

The terminal side of angle in standard position intersects the unit circle at each point P . Find cos and sin .

P(0, –1)

A: cos θ = –1, sin θ = 0

B:: cos θ = 0, sin θ =

C:: cos θ = 0, sin θ = 1

D: cos θ = 0, sin θ = –1

Answer 1

My thoughts on this is that the answer might be D

Answer 2

Is there a image of this?

Answer 3

no they didn't provide it

Answer 4

Okay.

Answer 5

I think it's D though?

Answer 6

\(cos(\theta) = x-coordinate\)
\(sin(\theta)=y-coordinate\)

Using this, which one do you think it is?

Answer 7

D

Answer 8

wait x minus coordinate?

Answer 9

\[\cos \theta=\cos 270=\cos (180+90)=-\cos 90=0\]
\[\sin \theta =\sin (270)=\sin(180+90)=-\sin 90=-1\]
where theta is the angle which the terminal line makes with initial line.