Prove the identity. sin 2, x = 1- cos x 1 + cos x Note that each Statement must be based on a Rule chosen from the Rule menu. To see a detailed description of a Rule, select the More Information Button to the right of the Rule. Select the Rule X Statement Rule sin 2x 1 + cos x Validate Select Rule O Algebra O Reciprocal Quotient O Pythagorean O Odd/Even O Evaluation Sum and Differenco Ⓡ

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