Solve the trigonometric equation in the INTERVAL [0,
2π). Give the exact value, if possible; otherwise, round
your answer to two decimal places. (Enter your answers as a
comma-separated list.)
a) 8 sin(π) β 2 = 0
π =
b) (4 cos(π) β 2)(8 sin(π) β 8) = 0
π =
c) 2 cos2(π) + 15 cos(π) + 7 = 0
π =