Question

Choose the point on the terminal side of -210°. Please only answer this question if you are willing to show work so I can learn how you got your answer!

Answer 1

x=rcos∅=r cos (-210)=r cos 210=rcos (180+30)=-r cos 30

`x=-r* (sqrt 3)/(2) = (- sqrt 3r)/(2) ,`

`y=r sin (-210)=-rsin 210=-rsin (180+30)=-r(-sin 30)`
1
`or y=r sin 30=r* ( 1)/(2) = (r)/(2)`