What is the general solution for cos^2(90-θ)=1872 ?

The general solution for cos^2(90-θ)=1872 is No Solution for θ\in\mathbb{R}

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cos^2(90-θ)=1872

cos^{2} (9 0^{\circ} - θ) = 1872

No Solution for θ \in R

Solution steps

cos^{2} (9 0^{\circ} - θ) = 1872

Solve by substitution

cos (9 0^{\circ} - θ) = 1213, cos (9 0^{\circ} - θ) = - 1213

cos (9 0^{\circ} - θ) = 1213 :

No Solution

cos (9 0^{\circ} - θ) = - 1213 :

No Solution

Combine all the solutions

No Solution for θ \in R

cos (x) - cos (x) = 0

sin (x + 1) = cos (x)

3 cos (x) - 2 = 1

sin (4 x) = - sin (2 x)

t, x = 1 - 2 cos (2 t)

What is the general solution for cos^2(90-θ)=1872 ?
The general solution for cos^2(90-θ)=1872 is No Solution for θ\in\mathbb{R}