cos(3x+1.2)=.4

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Solution for cos(3x+1.2)=.4 equation: 


Simplifying
cos(3x + 1.2) = 0.4

Reorder the terms:
cos(1.2 + 3x) = 0.4
(1.2 * cos + 3x * cos) = 0.4
(1.2cos + 3cosx) = 0.4

Solving
1.2cos + 3cosx = 0.4

Solving for variable 'c'.

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

Reorder the terms:
-0.4 + 1.2cos + 3cosx = 0.4 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
-0.4 + 1.2cos + 3cosx = 0.0

The solution to this equation could not be determined.

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