If the point (x, y) is in Quadrant III,
which of the following must be true?

X must be greater than 0 and y must be less than 0.
I hope this helped.

Same length is comparing because it’s saying its the same and not different

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.