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Mathematics, 29.04.2021 14:00 grettelyesenia

Find a if sin 2A is equal to 1 2cos 3A is equal to 1 sec a minus 2 tan3 a minus 1 is equal to zero

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Find a if sin 2A is equal to 1 2cos 3A is equal to 1 sec a minus 2 tan3 a minus 1 is equal to zero...

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