What is the general solution for cos(θ)+1=1 ?

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

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cos(θ)+1=1

cos (θ) + 1 = 1

θ = \frac{π}{2} + 2 πn, θ = \frac{3 π}{2} + 2 πn

Degrees

θ = 9 0^{\circ} + 36 0^{\circ} n, θ = 27 0^{\circ} + 36 0^{\circ} n

Solution steps

cos (θ) + 1 = 1

Subtract

1

from both sides

cos (θ) + 1 - 1 = 1 - 1

Simplify

cos (θ) = 0

General solutions for

cos (θ) = 0

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}

θ = \frac{π}{2} + 2 πn, θ = \frac{3 π}{2} + 2 πn

θ = \frac{π}{2} + 2 πn, θ = \frac{3 π}{2} + 2 πn

9 cos (x) tan (x) = - 8 tan (x)

2 sin^{2} (x) + cos (x) = 2

sin (x) cos (x) = - 9 cos (x)

5 tan (θ) - 7 = 0

cot^{2} (x) + 1 = sin^{2} (x)

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