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Simplifying cos(x + -15) = 0.707 Reorder the terms: cos(-15 + x) = 0.707 (-15 * cos + x * cos) = 0.707 (-15cos + cosx) = 0.707 Solving -15cos + cosx = 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 + -15cos + cosx = 0.707 + -0.707 Combine like terms: 0.707 + -0.707 = 0.000 -0.707 + -15cos + cosx = 0.000 The solution to this equation could not be determined.
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