What is the general solution for solvefor x,cos(x)= 1/2 ?

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

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solvefor x,cos(x)= 1/2

solve for

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

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

Degrees

x = 6 0^{\circ} + 36 0^{\circ} n, x = 30 0^{\circ} + 36 0^{\circ} n

Solution steps

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

General solutions for

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

cos (x)

periodicity table with

2 πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

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

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

2 sin (2 x) + 3 = 0

20 sin (x) + 3 = 8

cos (2 θ) + 3 = 5 cos (θ)

cos (5 x) = \frac{3}{2}

- 2 cos^{2} (x) = cos (x) - 1

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