Упростите выражения:

а) tg(π-α) пи - альфа

б) ctg(π+α)

В) sin (360градусов+α)

г)cos (360градусов-α)

д) ctg (360градусов-α)

e) tg (360 градусов+α)

ж) sin (90 градусов-α)-(180градусов -α) + tg (180градусов+α)- ctg (270градусов -α).

Спасибо.

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