) s e t OSA q tan2x — 1 COS2x o csc * - 2 co£x:o …q tan2x — 1 COS2x o csc * - 2 co£x:o cosx— Sr-r 2cos2x-cosx= / (2 cos 2 COS x 4) —o cosx—l = o Sec x — I Sec x = 2

Jan 30, 2020

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