8cos^2x-9=0

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Solution for 8cos^2x-9=0 equation:


Simplifying
8cos2x + -9 = 0

Reorder the terms:
-9 + 8cos2x = 0

Solving
-9 + 8cos2x = 0

Solving for variable 'c'.

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

Add '9' to each side of the equation.
-9 + 9 + 8cos2x = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 8cos2x = 0 + 9
8cos2x = 0 + 9

Combine like terms: 0 + 9 = 9
8cos2x = 9

Divide each side by '8os2x'.
c = 1.125o-1s-2x-1

Simplifying
c = 1.125o-1s-2x-1

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