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If tan(A +B) = And tan(A -B) = y, find the values of tan 2A And tan 2B.
Given tan(A +B) = x And tan(A –B) = y
Consider tan 2A = tan(A +A)
= tan(A +B +A –B)
We know that
Consider tan 2B = tan(B +B)
= tan(B +A +B –A)
We know that tan(-θ) = - tan θ
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