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valeriyivanov
@valeriyivanov
July 2022
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a)sin(π+t)+cos(π/2+t)
б)tg(3π/2+a)sin(2π-a)
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Answers & Comments
AidaLacrima
По формулам приведения
a) sin (π+t)+cos(π/2+t)= -sin t -sin t = -2 sin t
б) -ctg α *( -sin α)=
* sinα=cos α
2 votes
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Answers & Comments
a) sin (π+t)+cos(π/2+t)= -sin t -sin t = -2 sin t
б) -ctg α *( -sin α)=* sinα=cos α