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Simplifying 6cos(x + -21) = 0 Reorder the terms: 6cos(-21 + x) = 0 (-21 * 6cos + x * 6cos) = 0 (-126cos + 6cosx) = 0 Solving -126cos + 6cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Factor out the Greatest Common Factor (GCF), '6cos'. 6cos(-21 + x) = 0 Ignore the factor 6.Subproblem 1
Set the factor 'cos' equal to zero and attempt to solve: Simplifying cos = 0 Solving cos = 0 Move all terms containing c to the left, all other terms to the right. Simplifying cos = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Subproblem 2
Set the factor '(-21 + x)' equal to zero and attempt to solve: Simplifying -21 + x = 0 Solving -21 + x = 0 Move all terms containing c to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + x = 0 + 21 Combine like terms: -21 + 21 = 0 0 + x = 0 + 21 x = 0 + 21 Combine like terms: 0 + 21 = 21 x = 21 Add '-1x' to each side of the equation. x + -1x = 21 + -1x Combine like terms: x + -1x = 0 0 = 21 + -1x Simplifying 0 = 21 + -1x The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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