Question

PLEASE HELP! The range of function Cos-1 a = θ is: A) {θ| 0 ≤ θ ≤ 2π}, B){θ| -π/2 < θ < π/2}, or C) {θ| 0 ≤ θ ≤ π}

Answer 1

The domain for arccos is [-1, 1]. The range is [0, pi].