Help pl! If the sin 30° = one over two, then which statement is true? (6 points)

Group of answer choices

cos 150° = 1, because the cosine and sine are supplements

cos 150° = 0, because the cosine and sine are supplements

cos 60° = 0, because the cosine and sine are complements

cos 60° = one over two, because the cosine and sine are complements