The point on the unit circle corresponding to angle has coordinates (cos(-θ), sin(-θ)) = (cos(θ),-sin(θ)).
The point on the unit circle corresponding to angle has coordinates .
![[Graphics:../Images/AuthoringNotebooks_gr_9.gif]](../Images/AuthoringNotebooks_gr_9.gif)
has coordinates (cos(-θ), sin(-θ)) = (cos(θ),-sin(θ)).
![[Graphics:../Images/AuthoringNotebooks_gr_10.gif]](../Images/AuthoringNotebooks_gr_10.gif)
has coordinates ![[Graphics:../Images/AuthoringNotebooks_gr_11.gif]](../Images/AuthoringNotebooks_gr_11.gif)
![[Graphics:../Images/AuthoringNotebooks_gr_12.gif]](../Images/AuthoringNotebooks_gr_12.gif)
.
