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Matroskinnn
@Matroskinnn
August 2022
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Корень из 32×sin 33п/4 cos 34п/3
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sedinalana
√
32×sin 33п/4 cos 34п/3=4
√2*sin(8π+π/4)*сos(11π+π/3)=
=4√2sin(π/4)*cos(π+π/3)=4√2*√2/2*(-1/2)=-2
6 votes
Thanks 8
Matroskinnn
Вы можете мне объяснить почему cos со знаком минус
sedinalana
cos(П+a)=-cosa 2 четверть знак минус
sedinalana
cos(П+a)=-cosa 3 четверть знак минус,извините
Matroskinnn
Ой спасибо огромное!!!
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Answers & Comments
=4√2sin(π/4)*cos(π+π/3)=4√2*√2/2*(-1/2)=-2