Suppose that tanα=−43​ and 2π​<α<π. Find the exact values of cos2α​ and tan2α​.

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answerhappygod
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Suppose that tanα=−43​ and 2π​<α<π. Find the exact values of cos2α​ and tan2α​.

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Suppose that tanα=−43​ and 2π​<α<π. Find the exact values of cos2α​ and tan2α​.
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