cos(x-90)=1

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Solution for cos(x-90)=1 equation: 


Simplifying
cos(x + -90) = 1

Reorder the terms:
cos(-90 + x) = 1
(-90 * cos + x * cos) = 1
(-90cos + cosx) = 1

Solving
-90cos + cosx = 1

Solving for variable 'c'.

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

Reorder the terms:
-1 + -90cos + cosx = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + -90cos + cosx = 0

The solution to this equation could not be determined.

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