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Simplifying cos(2x) + cos2(x) + -1sin2(x) = 1 Remove parenthesis around (2x) cos * 2x + cos2(x) + -1sin2(x) = 1 Reorder the terms for easier multiplication: 2cos * x + cos2(x) + -1sin2(x) = 1 Multiply cos * x 2cosx + cos2(x) + -1sin2(x) = 1 Multiply cos2 * x 2cosx + cos2x + -1sin2(x) = 1 Multiply in2s * x 2cosx + cos2x + -1in2sx = 1 Solving 2cosx + cos2x + -1in2sx = 1 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. 2cosx + cos2x + -1in2sx + in2sx = 1 + in2sx Combine like terms: -1in2sx + in2sx = 0 2cosx + cos2x + 0 = 1 + in2sx 2cosx + cos2x = 1 + in2sx Reorder the terms: -1 + 2cosx + cos2x + -1in2sx = 1 + in2sx + -1 + -1in2sx Reorder the terms: -1 + 2cosx + cos2x + -1in2sx = 1 + -1 + in2sx + -1in2sx Combine like terms: 1 + -1 = 0 -1 + 2cosx + cos2x + -1in2sx = 0 + in2sx + -1in2sx -1 + 2cosx + cos2x + -1in2sx = in2sx + -1in2sx Combine like terms: in2sx + -1in2sx = 0 -1 + 2cosx + cos2x + -1in2sx = 0 The solution to this equation could not be determined.
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