упростите выражение:
ctg t *sin (-t) + cos (2П-t)
чему равен
ctg 13,5П=?
ctg t *sin (-t) + cos (2П-t) =
ctg 13,5П= ctg П/2 = 0
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Verified answer
ctg t *sin (-t) + cos (2П-t) =
ctg 13,5П= ctg П/2 = 0