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Popular >

9cos^2(x)+18cos(x)+9=0

Solution

9 cos^{2} (x) + 18 cos (x) + 9 = 0

Solution

x = π + 2 πn

+1

Solution steps

9 cos^{2} (x) + 18 cos (x) + 9 = 0

Solve by substitution

cos (x) = - 1

cos (x) = - 1 : x = π + 2 πn

Combine all the solutions

x = π + 2 πn

Popular Examples

cot(3x)=-(sqrt(3))/3

cot (3 x) = - \frac{3}{3}

sin (6 θ) = 0

3 cot (x) + 1 = - 2

sin^2(x/2)+cos(x)=0

sin^{2} (\frac{x}{2}) + cos (x) = 0

3 cos (x) + 1 = 1

Frequently Asked Questions (FAQ)

What is the general solution for 9cos^2(x)+18cos(x)+9=0 ?
The general solution for 9cos^2(x)+18cos(x)+9=0 is x=pi+2pin