What is the general solution for sqrt(2)cos(x)=-1 ?

The general solution for sqrt(2)cos(x)=-1 is x=(3pi)/4+2pin,x=(5pi)/4+2pin

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sqrt(2)cos(x)=-1

2 cos (x) = - 1

x = \frac{3 π}{4} + 2 πn, x = \frac{5 π}{4} + 2 πn

Solution steps

2 cos (x) = - 1

Divide both sides by

2

cos (x) = - \frac{2}{2}

General solutions for

cos (x) = - \frac{2}{2}

x = \frac{3 π}{4} + 2 πn, x = \frac{5 π}{4} + 2 πn

2 sec (u) sin (u) + 2 = 4 sin (u) + sec (u)

4 cos^{2} (x) - 1 = 0, 0 \leq x < 2 π

y, e^{2 x} = sin (x + 3 y)

7 sin (2 x) = 7 cos (x)

cos (θ) = - 0.17

What is the general solution for sqrt(2)cos(x)=-1 ?
The general solution for sqrt(2)cos(x)=-1 is x=(3pi)/4+2pin,x=(5pi)/4+2pin