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Prove that tanA=cosec2A-cot2A.Deduce the of value tan(45/2)? Electro chemistry questions, need help asap for 10 points? Tan3(x) = 4tanx? Graph g(x)=2(x-2)^2+5 by transforming the graph of f(x)=x^2. Describe the transformation? Rank each of the following in order of decreasing standard molar entropy?