8cos^2(x)=4cos(x)

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Solution for 8cos^2(x)=4cos(x) equation:


Simplifying
8cos2(x) = 4cos(x)

Multiply cos2 * x
8cos2x = 4cos(x)

Multiply cos * x
8cos2x = 4cosx

Solving
8cos2x = 4cosx

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-4cosx' to each side of the equation.
-4cosx + 8cos2x = 4cosx + -4cosx

Combine like terms: 4cosx + -4cosx = 0
-4cosx + 8cos2x = 0

Factor out the Greatest Common Factor (GCF), '4cosx'.
4cosx(-1 + 2s) = 0

Ignore the factor 4.

Subproblem 1

Set the factor 'cosx' equal to zero and attempt to solve: Simplifying cosx = 0 Solving cosx = 0 Move all terms containing c to the left, all other terms to the right. Simplifying cosx = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(-1 + 2s)' equal to zero and attempt to solve: Simplifying -1 + 2s = 0 Solving -1 + 2s = 0 Move all terms containing c to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 2s = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 2s = 0 + 1 2s = 0 + 1 Combine like terms: 0 + 1 = 1 2s = 1 Add '-2s' to each side of the equation. 2s + -2s = 1 + -2s Combine like terms: 2s + -2s = 0 0 = 1 + -2s Simplifying 0 = 1 + -2s The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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