Which of the following is equal to One-half or negative one-half? Check all that apply. Sine (StartFraction 7 pi Over 6 EndFraction) Sine (StartFraction 4 pi Over 3 EndFraction) Cosine (StartFraction 5 pi Over 3 EndFraction) Cosine (StartFraction pi Over 6 EndFraction) Cosine (StartFraction 5 pi Over 6 EndFraction) Sine (StartFraction 5 pi Over 6 EndFraction)