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Mathematics, 16.04.2020 02:04 amoakoh800003

Based on Pythagorean identities, which equation is true?
sin?e1 = cose
sec2etan?e=-1
O-cos2e1=-sin?
cotecsce=-1

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Based on Pythagorean identities, which equation is true?
sin?e1 = cose
sec2etan?e=-1

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