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Statement I : If 0 < alpha, beta < pi/4,...

Statement I : If `0 < alpha, beta < pi/4`, `sinalpha = 1/sqrt(1+a^2), cosbeta =b/sqrt(1+b^2)` then `tan(alpha + beta) = (a+b)/(a-b)` Statement II : If `tan(A+B) = m, tan(A-B) = n` then `tan2B = (m-n)/(m+n)`

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