cos(0)=0.9

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Solution for cos(0)=0.9 equation: 


Simplifying
cos(0) = 0.9

Reorder the terms for easier multiplication:
0cos = 0.9

Anything times zero is zero.
0cos = 0.9

Solving
0 = 0.9

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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