What is the general solution for cos(y)=-1/2 ?

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

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cos(y)=-1/2

cos (y) = - \frac{1}{2}

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

Solution steps

cos (y) = - \frac{1}{2}

General solutions for

cos (y) = - \frac{1}{2}

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

\frac{2}{1 + sin ( x )} = 3 - 2 sin (x)

x, 4 cos^{2} (x) = 5 + 4 sin (x)

t, y = cos (2 t)

cos (3 x) = \frac{1}{5}

cos^{2} (x) - 5 cos (x) + 6 = 0

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