cos^2x+2cosx+1=1-cos^2x

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Solution for cos^2x+2cosx+1=1-cos^2x equation:


Simplifying
cos2x + 2cosx + 1 = 1 + -1cos2x

Reorder the terms:
1 + 2cosx + cos2x = 1 + -1cos2x

Add '-1' to each side of the equation.
1 + 2cosx + -1 + cos2x = 1 + -1 + -1cos2x

Reorder the terms:
1 + -1 + 2cosx + cos2x = 1 + -1 + -1cos2x

Combine like terms: 1 + -1 = 0
0 + 2cosx + cos2x = 1 + -1 + -1cos2x
2cosx + cos2x = 1 + -1 + -1cos2x

Combine like terms: 1 + -1 = 0
2cosx + cos2x = 0 + -1cos2x
2cosx + cos2x = -1cos2x

Solving
2cosx + cos2x = -1cos2x

Solving for variable 'c'.

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

Add 'cos2x' to each side of the equation.
2cosx + cos2x + cos2x = -1cos2x + cos2x

Combine like terms: cos2x + cos2x = 2cos2x
2cosx + 2cos2x = -1cos2x + cos2x

Combine like terms: -1cos2x + cos2x = 0
2cosx + 2cos2x = 0

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

Ignore the factor 2.

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 + s)' equal to zero and attempt to solve: Simplifying 1 + s = 0 Solving 1 + s = 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 + s = 0 + -1 Combine like terms: 1 + -1 = 0 0 + s = 0 + -1 s = 0 + -1 Combine like terms: 0 + -1 = -1 s = -1 Add '-1s' to each side of the equation. s + -1s = -1 + -1s Combine like terms: s + -1s = 0 0 = -1 + -1s Simplifying 0 = -1 + -1s 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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