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20 September, 15:24

Find the exact value of tan 2x if tan x=7/11 and pi

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  1. 20 September, 15:45
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    Use double angle formula

    tan2x = 2tanx / (1 - tan^2x) = 2 * 7/11 (1 - (7/11) ^2) = 77/36
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