sin(2x)cos(6x)-cos(2x)sin(6x)=-0.4

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Solution for sin(2x)cos(6x)-cos(2x)sin(6x)=-0.4 equation:


Simplifying
sin(2x) * cos(6x) + -1cos(2x) * sin(6x) = -0.4

Remove parenthesis around (2x)
ins * 2x * cos(6x) + -1cos(2x) * sin(6x) = -0.4

Remove parenthesis around (6x)
ins * 2x * cos * 6x + -1cos(2x) * sin(6x) = -0.4

Reorder the terms for easier multiplication:
2 * 6ins * x * cos * x + -1cos(2x) * sin(6x) = -0.4

Multiply 2 * 6
12ins * x * cos * x + -1cos(2x) * sin(6x) = -0.4

Multiply ins * x
12insx * cos * x + -1cos(2x) * sin(6x) = -0.4

Multiply insx * cos
12cinos2x * x + -1cos(2x) * sin(6x) = -0.4

Multiply cinos2x * x
12cinos2x2 + -1cos(2x) * sin(6x) = -0.4

Remove parenthesis around (2x)
12cinos2x2 + -1cos * 2x * sin(6x) = -0.4

Remove parenthesis around (6x)
12cinos2x2 + -1cos * 2x * ins * 6x = -0.4

Reorder the terms for easier multiplication:
12cinos2x2 + -1 * 2 * 6cos * x * ins * x = -0.4

Multiply -1 * 2
12cinos2x2 + -2 * 6cos * x * ins * x = -0.4

Multiply -2 * 6
12cinos2x2 + -12cos * x * ins * x = -0.4

Multiply cos * x
12cinos2x2 + -12cosx * ins * x = -0.4

Multiply cosx * ins
12cinos2x2 + -12cinos2x * x = -0.4

Multiply cinos2x * x
12cinos2x2 + -12cinos2x2 = -0.4

Combine like terms: 12cinos2x2 + -12cinos2x2 = 0
0 = -0.4

Solving
0 = -0.4

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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