Объяснение:
(cos(-13π/3)-sin(7π/6))/tg(-π/4)=
=(1/2-(-1/2))/(-1)=(1/2+1/2)/(-1)=1/(-1)= -1
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Объяснение:
(cos(-13π/3)-sin(7π/6))/tg(-π/4)=
=(1/2-(-1/2))/(-1)=(1/2+1/2)/(-1)=1/(-1)= -1