Find all values of theta​, if theta is in the interval ​[0 degrees​, 360 degrees​) and has the given function value. sec theta equals negative 2 Root 3 Over 3

Question

(-2 sqrt3)/3

Answer 1

if sec Θ = -2√3/3, then cos Θ = -√3/2

The reference angle for cos Θ = √3/2 is 30º

Since cos is negative in the second and third quadrants, the solution is

150º and 210º