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Simplifying Sinx = cos(x + -20) Reorder the terms: inxS = cos(-20 + x) inxS = (-20 * cos + x * cos) inxS = (-20cos + cosx) Solving inxS = -20cos + cosx Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Divide each side by 'nxS'. i = -20cn^{-1}osx^{-1}S^{-1}+ cn^{-1}osS^{-1}Simplifying i = -20cn^{-1}osx^{-1}S^{-1}+ cn^{-1}osS^{-1}Reorder the terms: i = cn^{-1}osS^{-1}+ -20cn^{-1}osx^{-1}S^{-1}

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