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Simplifying Cos(4x) + 2cos2(x) = 1 Remove parenthesis around (4x) osC * 4x + 2cos2(x) = 1 Reorder the terms for easier multiplication: 4osC * x + 2cos2(x) = 1 Multiply osC * x 4osxC + 2cos2(x) = 1 Multiply cos2 * x 4osxC + 2cos2x = 1 Reorder the terms: 2cos2x + 4osxC = 1 Solving 2cos2x + 4osxC = 1 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-4osxC' to each side of the equation. 2cos2x + 4osxC + -4osxC = 1 + -4osxC Combine like terms: 4osxC + -4osxC = 0 2cos2x + 0 = 1 + -4osxC 2cos2x = 1 + -4osxC Divide each side by '2os2x'. c = 0.5o-1s-2x-1 + -2s-1C Simplifying c = 0.5o-1s-2x-1 + -2s-1C
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