Question An angle of measure 120 degrees intersects the unit circle at point (-1/2,√3/2) What is the exact value of cos(120)

The exact value of cos120 if the measure 120 degrees intersects the unit circle at point (-1/2,√3/2) is 0.5 Solving trigonometry identity If an angle of measure 120 degrees intersects the unit circle at point (-1/2,√3/2), the measure of cos(120) can be expressed as; Cos120 = cos(90 + 30) Using the cosine rule of addition cos(90 + 30) = cos90cos30 – sin90sin30 cos(90 + 30) = 0(√3/2) – 1(0.5) cos(90 + 30) = 0 – 0.5 cos(90 + 30) = 0.5 Hence the exact value of cos120 if the measure 120 degrees intersects the unit circle at point (-1/2,√3/2) is 0.5 Learn more on unit circle here: https://brainly.com/question/23989157 #SPJ1 Reply

exact valueof cos120 if themeasure 120 degreesintersects the unitcircle at point (-1/2,√3/2) is0.5## Solving trigonometry identity

osine rule of addition0.5exact valueof cos120 if themeasure 120 degreesintersects the unitcircle at point (-1/2,√3/2) is0.5unit circle here: https://brainly.com/question/23989157