cos(4x-20)+cos(2x+20)=0

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Solution for cos(4x-20)+cos(2x+20)=0 equation:


Simplifying
cos(4x + -20) + cos(2x + 20) = 0

Reorder the terms:
cos(-20 + 4x) + cos(2x + 20) = 0
(-20 * cos + 4x * cos) + cos(2x + 20) = 0
(-20cos + 4cosx) + cos(2x + 20) = 0

Reorder the terms:
-20cos + 4cosx + cos(20 + 2x) = 0
-20cos + 4cosx + (20 * cos + 2x * cos) = 0
-20cos + 4cosx + (20cos + 2cosx) = 0

Reorder the terms:
-20cos + 20cos + 4cosx + 2cosx = 0

Combine like terms: -20cos + 20cos = 0
0 + 4cosx + 2cosx = 0
4cosx + 2cosx = 0

Combine like terms: 4cosx + 2cosx = 6cosx
6cosx = 0

Solving
6cosx = 0

Solving for variable 'c'.

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

Divide each side by '6'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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