What is the general solution for cos^2(x)=-0.267 ?

The general solution for cos^2(x)=-0.267 is No Solution for x\in\mathbb{R}

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cos^2(x)=-0.267

cos^{2} (x) = - 0.267

No Solution for x \in R

Solution steps

cos^{2} (x) = - 0.267

Solve by substitution

cos (x) = 0.267 i, cos (x) = - 0.267 i

cos (x) = 0.267 i :

No Solution

cos (x) = - 0.267 i :

No Solution

Combine all the solutions

No Solution for x \in R

sin (x - 4) = cos (9 x + 4)

x, 0 = - 2 sin (x) - 4 cos (2 x)

tan (a) = \frac{4}{4}

cos^{2} (θ) = 2 cos (θ)

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

What is the general solution for cos^2(x)=-0.267 ?
The general solution for cos^2(x)=-0.267 is No Solution for x\in\mathbb{R}