0.9659 Вартість cos pi/12 is equal to the x-coordinate (0.9659). ∴ cos pi/12 = 0.9659.
The value of cosπ12 is 15 in degrees. As we know that, cos 15 degree lies in Quadrant 1, hence it is impossible for cosine функція до negative in first quadrant.
√3/2 Значення cos pi/6 in decimal is 0.866025403. . .. Cos pi/6 може бути expressed using the equivalent given angle (pi/6) in degrees (30°). ∴ cos pi/6 = cos π/6 = cos(30°) = √3/2 or 0.8660254. . .