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яяяяя36
@яяяяя36
July 2022
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5:6+7sin2a,если tg=0,2
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iosiffinikov
Sina=0,2cosa
(sina)^2=0,04 (1-(sina)^2)
(1,04)(sina)^2=0,04
(sina)^2=1/21
sin2a=2 sina*cosa=0,4 (sina)^2
7sin2a=0,4/3
5/6+4/30=29/30
Ответ: 29/30
1 votes
Thanks 4
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Answers & Comments
(sina)^2=0,04 (1-(sina)^2)
(1,04)(sina)^2=0,04
(sina)^2=1/21
sin2a=2 sina*cosa=0,4 (sina)^2
7sin2a=0,4/3
5/6+4/30=29/30
Ответ: 29/30