evaluate cos{pi/3 - cos-1 (1/2)} Share with your friends Share 3 Varun.Rawat answered this We know that range of the principal value branch of cos-1 is 0,π.Let cos-112 = θ⇒cos θ = 12⇒cos θ = cos π3⇒θ = π3∈0,πSo, principal value of cos-112 = π3Now, cosπ3 - cos-112 = cosπ3-π3 = cos 0 = 1 11 View Full Answer Dushyant Gehlot answered this cos(pi/3 - pi/3) as cos^-1(1/2)=pi/3 therefore, cos(0)=1 3
