Which of the following replacements for​ ? make
a perfect​ square?

Hey bby was a good way i just got

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.

I’m not gonna do that