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komissarova181111
@komissarova181111
August 2022
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tg(в квадрате) P/8 сколько равен?
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kirichekov
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Π/8=(π/4):2 по формуле тангенс половинного угла.
tg(α/2)=sinα/(1+cosα)
tg(π/8)=tg[(π/4):2]=[sin(π/4)]/[1+cos(π/4])=(√2/2)/(1+√2/2)=√2/(2+√2)
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Answers & Comments
Verified answer
Π/8=(π/4):2 по формуле тангенс половинного угла.tg(α/2)=sinα/(1+cosα)
tg(π/8)=tg[(π/4):2]=[sin(π/4)]/[1+cos(π/4])=(√2/2)/(1+√2/2)=√2/(2+√2)