cos^2x-2sin^2x=0.25

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Solution for cos^2x-2sin^2x=0.25 equation: 


Simplifying
cos2x + -2sin2x = 0.25

Solving
cos2x + -2in2sx = 0.25

Solving for variable 'c'.

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

Add '2in2sx' to each side of the equation.
cos2x + -2in2sx + 2in2sx = 0.25 + 2in2sx

Combine like terms: -2in2sx + 2in2sx = 0
cos2x + 0 = 0.25 + 2in2sx
cos2x = 0.25 + 2in2sx

Divide each side by 'os2x'.
c = 0.25o-1s-2x-1 + 2in2o-1s-1

Simplifying
c = 0.25o-1s-2x-1 + 2in2o-1s-1

Reorder the terms:
c = 2in2o-1s-1 + 0.25o-1s-2x-1

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