Cos*2x=0.2

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Solution for Cos*2x=0.2 equation: 


Simplifying
Cos * 2x = 0.2

Reorder the terms for easier multiplication:
2osC * x = 0.2

Multiply osC * x
2osxC = 0.2

Solving
2osxC = 0.2

Solving for variable 'o'.

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

Divide each side by '2sxC'.
o = 0.1s-1x-1C-1

Simplifying
o = 0.1s-1x-1C-1

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