Величина sin(-7π/4)+cos(7π/4)+tg(15π/4)-ctg(-7π/4) равна

Question

Математика: Величина sin(-7π/4)+cos(7π/4)+tg(15π/4)-ctg(-7π/4) равна

tugatimu9876 · Answer

ответ:√2-2Пошаговое объяснение:sin(-7π/4)+cos(7π/4)+tg(15π/4)-ctg(-7π/4)=(-sin(7π/4))+((cos(2π-π/4))+(tg(4π-π/4))+ctg(2π-π/4)=sin(π/4)+cos(π/4)-tg(π/4)-ctg(π/4)=√2/2+√2/2-1-1=√2-2...

Величина sin(-7π/4)+cos(7π/4)+tg(15π/4)-ctg(-7π/4) равна

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