cos^2X-sin^2X=1-2sin^2X

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Solution for cos^2X-sin^2X=1-2sin^2X equation: 


Simplifying
cos2X + -1sin2X = 1 + -2sin2X

Solving
cos2X + -1in2sX = 1 + -2in2sX

Solving for variable 'c'.

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

Add 'in2sX' to each side of the equation.
cos2X + -1in2sX + in2sX = 1 + -2in2sX + in2sX

Combine like terms: -1in2sX + in2sX = 0
cos2X + 0 = 1 + -2in2sX + in2sX
cos2X = 1 + -2in2sX + in2sX

Combine like terms: -2in2sX + in2sX = -1in2sX
cos2X = 1 + -1in2sX

Divide each side by 'os2X'.
c = o-1s-2X-1 + -1in2o-1s-1

Simplifying
c = o-1s-2X-1 + -1in2o-1s-1

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

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