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Simplifying Sin2(x) = 4cosx Multiply in2S * x in2xS = 4cosx Solving in2xS = 4cosx Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Divide each side by 'n2xS'. i = 4cn-2osS-1 Simplifying i = 4cn-2osS-1
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