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Mathematics, 11.03.2020 02:04 little68941

Which of the following are identities? Check all that apply.
A. tan2x = 1 + sec?x
B. sin2x = 1 - cos2x
c. sinx- cos2x = 1
D. cot?x= csc?x= 1

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Which of the following are identities? Check all that apply.
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