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Simplifying -2sin(-2) = 2sin(2) Reorder the terms for easier multiplication: -2 * -2ins = 2sin(2) Multiply -2 * -2 4ins = 2sin(2) Reorder the terms for easier multiplication: 4ins = 2 * 2ins Multiply 2 * 2 4ins = 4ins Add '-4ins' to each side of the equation. 4ins + -4ins = 4ins + -4ins Combine like terms: 4ins + -4ins = 0 0 = 4ins + -4ins Combine like terms: 4ins + -4ins = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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