Relations and Functions, please help with these 3 questions asap. I will give brainliest! Only answer if you know how to do this and explain because i actually want to learn this. Thank you!

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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.