Question

Упростите выражения
а)1-8×sin²α×cos²α
б)1-2×sin²×α/8
в)sin2α×ctgα-1
г)2cos²α/6 - 1
д)1/2×tgα×sin2α+cos²α
е)(tgα+ctgα)sin2α
ж)(1-tg²α)cos²α

Answer 1

Ответ:

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