What is the general solution for arctan(θ)=-2 ?

The general solution for arctan(θ)=-2 is No Solution for θ\in\mathbb{R}

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arctan(θ)=-2

arctan (θ) = - 2

No Solution for θ \in R

Solution steps

arctan (θ) = - 2

- \frac{π}{2} < arctan (x) < \frac{π}{2}

No Solution for θ \in R

sin (3 x) - sin (x) = sin (3 x - x)

sin (a) = - \frac{3}{2}

t, v = 311 cos (30 t + 3 0^{\circ}) v

cos^{2} (x) = 2 sin (x)

sin^{4} (θ) + cos^{4} (θ) = 2 sin^{2} (θ) - 1

What is the general solution for arctan(θ)=-2 ?
The general solution for arctan(θ)=-2 is No Solution for θ\in\mathbb{R}