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Simplifying cos2(4x) + -1sin2(4x) = 0 Remove parenthesis around (4x) cos2 * 4x + -1sin2(4x) = 0 Reorder the terms for easier multiplication: 4cos2 * x + -1sin2(4x) = 0 Multiply cos2 * x 4cos2x + -1sin2(4x) = 0 Remove parenthesis around (4x) 4cos2x + -1in2s * 4x = 0 Reorder the terms for easier multiplication: 4cos2x + -1 * 4in2s * x = 0 Multiply -1 * 4 4cos2x + -4in2s * x = 0 Multiply in2s * x 4cos2x + -4in2sx = 0 Solving 4cos2x + -4in2sx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '4in2sx' to each side of the equation. 4cos2x + -4in2sx + 4in2sx = 0 + 4in2sx Combine like terms: -4in2sx + 4in2sx = 0 4cos2x + 0 = 0 + 4in2sx 4cos2x = 0 + 4in2sx Remove the zero: 4cos2x = 4in2sx Divide each side by '4os2x'. c = in2o-1s-1 Simplifying c = in2o-1s-1
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