Jameson, a calculus student, has the answer 2 sin x (sec x + tan x sec2 x) to a homework question.The answer key has 2 tan x sec2 x as the answer to the question. Does Jameson have an equivalent form of the answer, or should the homework problem be redone? Show the work to justify your answer. An identity is an equation that is true for all values for which it is defined. State the restrictions on the variable for the following identities.
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