8cos^4a=8cos^2a-1

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Solution for 8cos^4a=8cos^2a-1 equation:


Simplifying
8cos4a = 8cos2a + -1

Reorder the terms:
8acos4 = -1 + 8acos2

Solving
8acos4 = -1 + 8acos2

Solving for variable 'a'.

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

Add '-8acos2' to each side of the equation.
-8acos2 + 8acos4 = -1 + 8acos2 + -8acos2

Combine like terms: 8acos2 + -8acos2 = 0
-8acos2 + 8acos4 = -1 + 0
-8acos2 + 8acos4 = -1

Reorder the terms:
1 + -8acos2 + 8acos4 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + -8acos2 + 8acos4 = 0

The solution to this equation could not be determined.

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