Question

Please help. Don't understand

Answer 1

What do you need help with?

Answer 2

I don't not know how to answer question 7

Answer 3

@seii

Answer 4

number 6 isn't right

Answer 5

what did i do wrong? @peachpi

Answer 6

-120° is in the 3rd quadrant, both coordinates should be negative

Answer 7

so would it be -1/2 and - \[\sqrt{3}\] over 2

Answer 8

Yes.
For the other question, the coordinates would be the legs of a right triangle. The radius of the unit circle is 1, so if you get 1 for the hypotenuse the point lies on the unit circle.