What is the general solution for cos(4*x)=-1 ?

The general solution for cos(4*x)=-1 is x= pi/4+(pin)/2

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cos(4*x)=-1

cos (4 \cdot x) = - 1

x = \frac{π}{4} + \frac{πn}{2}

Solution steps

cos (4 x) = - 1

General solutions for

cos (4 x) = - 1

4 x = π + 2 πn

Solve

4 x = π + 2 πn : x = \frac{π}{4} + \frac{πn}{2}

x = \frac{π}{4} + \frac{πn}{2}

3 + 2 cos (x) = 4 cos (\frac{x}{2})

- 3 sin (x) = cos (x)

2 csc^{2} (x) = 5 - 5 cot (x)

sin (x + 0.5) = 0.92, 0 \leq x \leq 2 π

cos (4 x) = 0.8 - 0.6

What is the general solution for cos(4*x)=-1 ?
The general solution for cos(4*x)=-1 is x= pi/4+(pin)/2