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Simplifying cos(x) = -0.7 Multiply cos * x cosx = -0.7 Solving cosx = -0.7 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by 'osx'. c = -0.7o-1s-1x-1 Simplifying c = -0.7o-1s-1x-1
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