The domain of {(-4, 0), (-2, 1), (1, 3), (2, 6)} is {-4, -2, 1}. true or false?

False, there also need to be a 2 in the domain.
PS. The domain is basically the x value.

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.

If you divide 0.1 and 0.6 you wii get 0.166666 which rounds to .167 which is answer b