What is the general solution for cos^2(x)+cos(x)-5=-3 ?

The general solution for cos^2(x)+cos(x)-5=-3 is x=2pin

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cos^2(x)+cos(x)-5=-3

cos^{2} (x) + cos (x) - 5 = - 3

x = 2 πn

Solution steps

cos^{2} (x) + cos (x) - 5 = - 3

Solve by substitution

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

cos (x) = 1 : x = 2 πn

cos (x) = - 2 :

No Solution

Combine all the solutions

x = 2 πn

\frac{9}{2} cos^{2} (x) - 2 = 0

\frac{1}{2} = cos (3 x)

3 cos (θ) = 2 + 2 sin (θ)

1.65 \cdot sin (3 0^{\circ}) = 1.33 \cdot sin (x)

sin (x) + cos (x) = \frac{3}{2}

What is the general solution for cos^2(x)+cos(x)-5=-3 ?
The general solution for cos^2(x)+cos(x)-5=-3 is x=2pin