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Simplifying cos(3(3x + -30)) = 0.707 Reorder the terms: cos(3(-30 + 3x)) = 0.707 cos((-30 * 3 + 3x * 3)) = 0.707 cos((-90 + 9x)) = 0.707 (-90 * cos + 9x * cos) = 0.707 (-90cos + 9cosx) = 0.707 Solving -90cos + 9cosx = 0.707 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Reorder the terms: -0.707 + -90cos + 9cosx = 0.707 + -0.707 Combine like terms: 0.707 + -0.707 = 0.000 -0.707 + -90cos + 9cosx = 0.000 The solution to this equation could not be determined.
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