Help.. pretty pleasee

The answer to your question is the last one. This S because the matching sides are in the correctly identified set ratio hope this helps ;)

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.