Cos^2(3x)-sin^2(3x)=

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Solution for Cos^2(3x)-sin^2(3x)= equation:


Simplifying
Cos2(3x) + -1sin2(3x) = 0

Remove parenthesis around (3x)
os2C * 3x + -1sin2(3x) = 0

Reorder the terms for easier multiplication:
3os2C * x + -1sin2(3x) = 0

Multiply os2C * x
3os2xC + -1sin2(3x) = 0

Remove parenthesis around (3x)
3os2xC + -1in2s * 3x = 0

Reorder the terms for easier multiplication:
3os2xC + -1 * 3in2s * x = 0

Multiply -1 * 3
3os2xC + -3in2s * x = 0

Multiply in2s * x
3os2xC + -3in2sx = 0

Reorder the terms:
-3in2sx + 3os2xC = 0

Solving
-3in2sx + 3os2xC = 0

Solving for variable 'i'.

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

Add '-3os2xC' to each side of the equation.
-3in2sx + 3os2xC + -3os2xC = 0 + -3os2xC

Combine like terms: 3os2xC + -3os2xC = 0
-3in2sx + 0 = 0 + -3os2xC
-3in2sx = 0 + -3os2xC
Remove the zero:
-3in2sx = -3os2xC

Divide each side by '-3n2sx'.
i = n-2osC

Simplifying
i = n-2osC

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