Does the equation y = x represent a function?

The answer should be A, “yes, because each input value only has one possible output.”

I hope this helps and have a great day! (Also brainliest would be appreciated but you don’t have to:) )

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.