Sin(8x)+sin(4x)-cos(2x)=0

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Solution for Sin(8x)+sin(4x)-cos(2x)=0 equation:


Simplifying
Sin(8x) + sin(4x) + -1cos(2x) = 0

Remove parenthesis around (8x)
inS * 8x + sin(4x) + -1cos(2x) = 0

Reorder the terms for easier multiplication:
8inS * x + sin(4x) + -1cos(2x) = 0

Multiply inS * x
8inxS + sin(4x) + -1cos(2x) = 0

Remove parenthesis around (4x)
8inxS + ins * 4x + -1cos(2x) = 0

Reorder the terms for easier multiplication:
8inxS + 4ins * x + -1cos(2x) = 0

Multiply ins * x
8inxS + 4insx + -1cos(2x) = 0

Remove parenthesis around (2x)
8inxS + 4insx + -1cos * 2x = 0

Reorder the terms for easier multiplication:
8inxS + 4insx + -1 * 2cos * x = 0

Multiply -1 * 2
8inxS + 4insx + -2cos * x = 0

Multiply cos * x
8inxS + 4insx + -2cosx = 0

Reorder the terms:
-2cosx + 4insx + 8inxS = 0

Solving
-2cosx + 4insx + 8inxS = 0

Solving for variable 'c'.

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

Add '-4insx' to each side of the equation.
-2cosx + 4insx + -4insx + 8inxS = 0 + -4insx

Combine like terms: 4insx + -4insx = 0
-2cosx + 0 + 8inxS = 0 + -4insx
-2cosx + 8inxS = 0 + -4insx
Remove the zero:
-2cosx + 8inxS = -4insx

Add '-8inxS' to each side of the equation.
-2cosx + 8inxS + -8inxS = -4insx + -8inxS

Combine like terms: 8inxS + -8inxS = 0
-2cosx + 0 = -4insx + -8inxS
-2cosx = -4insx + -8inxS

Divide each side by '-2osx'.
c = 2ino-1 + 4ino-1s-1S

Simplifying
c = 2ino-1 + 4ino-1s-1S

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