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verablak2000
@verablak2000
July 2022
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Докажите тождество (только третье)
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Zinina48
Tg(a+b)-tga-tgb/tga•tg(a+b)=tgb
tgb*tg(a+b)
tga+tgb- tga =tgb
tga+tgb- tgba+tgb^2
a =tgb|*a
tga^2+tgba-tgba+tgb^2=tgba
tg(a^2+b^2)=tgba|:tg
a^2+b^2=ba|: a^2
b^2= b|:b^2
a
1= 1 - неверно.
ab
Ответ:тождество неверно.
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Answers & Comments
tgb*tg(a+b)
tga+tgb- tga =tgb
tga+tgb- tgba+tgb^2
a =tgb|*a
tga^2+tgba-tgba+tgb^2=tgba
tg(a^2+b^2)=tgba|:tg
a^2+b^2=ba|: a^2
b^2= b|:b^2
a
1= 1 - неверно.
ab
Ответ:тождество неверно.