What is the general solution for cos^2(θ)-cos(θ)=0 ?

The general solution for cos^2(θ)-cos(θ)=0 is θ=2pin,θ= pi/2+2pin,θ=(3pi)/2+2pin

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cos^2(θ)-cos(θ)=0

cos^{2} (θ) - cos (θ) = 0

θ = 2 πn, θ = \frac{π}{2} + 2 πn, θ = \frac{3 π}{2} + 2 πn

Solution steps

cos^{2} (θ) - cos (θ) = 0

Solve by substitution

cos (θ) = 1, cos (θ) = 0

cos (θ) = 1 : θ = 2 πn

cos (θ) = 0 : θ = \frac{π}{2} + 2 πn, θ = \frac{3 π}{2} + 2 πn

Combine all the solutions

θ = 2 πn, θ = \frac{π}{2} + 2 πn, θ = \frac{3 π}{2} + 2 πn

cos (θ) = \frac{12}{13}

sin (2 θ) = cos (2 θ)

cosh (z) = 0

cos (x) = \frac{2}{π}

tan^{2} (x) + 3 tan (x) + 1 = 0

What is the general solution for cos^2(θ)-cos(θ)=0 ?
The general solution for cos^2(θ)-cos(θ)=0 is θ=2pin,θ= pi/2+2pin,θ=(3pi)/2+2pin