Cos(5x)=-cos(3x)

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Solution for Cos(5x)=-cos(3x) equation:


Simplifying
Cos(5x) = -1cos(3x)

Remove parenthesis around (5x)
osC * 5x = -1cos(3x)

Reorder the terms for easier multiplication:
5osC * x = -1cos(3x)

Multiply osC * x
5osxC = -1cos(3x)

Remove parenthesis around (3x)
5osxC = -1cos * 3x

Reorder the terms for easier multiplication:
5osxC = -1 * 3cos * x

Multiply -1 * 3
5osxC = -3cos * x

Multiply cos * x
5osxC = -3cosx

Solving
5osxC = -3cosx

Solving for variable 'o'.

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

Add '3cosx' to each side of the equation.
3cosx + 5osxC = -3cosx + 3cosx

Combine like terms: -3cosx + 3cosx = 0
3cosx + 5osxC = 0

Factor out the Greatest Common Factor (GCF), 'osx'.
osx(3c + 5C) = 0

Subproblem 1

Set the factor 'osx' equal to zero and attempt to solve: Simplifying osx = 0 Solving osx = 0 Move all terms containing o to the left, all other terms to the right. Simplifying osx = 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 '(3c + 5C)' equal to zero and attempt to solve: Simplifying 3c + 5C = 0 Reorder the terms: 5C + 3c = 0 Solving 5C + 3c = 0 Move all terms containing o to the left, all other terms to the right. Add '-5C' to each side of the equation. 5C + -5C + 3c = 0 + -5C Combine like terms: 5C + -5C = 0 0 + 3c = 0 + -5C 3c = 0 + -5C Remove the zero: 3c = -5C Add '-3c' to each side of the equation. 3c + -3c = -5C + -3c Combine like terms: 3c + -3c = 0 0 = -5C + -3c Simplifying 0 = -5C + -3c 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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