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Simplifying sin(2x) * sinx = cosa Remove parenthesis around (2x) ins * 2x * sinx = cosa Reorder the terms for easier multiplication: 2ins * x * insx = cosa Multiply ins * x 2insx * insx = cosa Multiply insx * insx 2i2n2s2x2 = cosa Solving 2i2n2s2x2 = acos Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Divide each side by '2n2s2x2'. i2 = 0.5acn-2os-1x-2 Simplifying i2 = 0.5acn-2os-1x-2 Reorder the terms: -0.5acn-2os-1x-2 + i2 = 0.5acn-2os-1x-2 + -0.5acn-2os-1x-2 Combine like terms: 0.5acn-2os-1x-2 + -0.5acn-2os-1x-2 = 0.0 -0.5acn-2os-1x-2 + i2 = 0.0 The solution to this equation could not be determined.
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