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Meow14
@Meow14
October 2021
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Упростить выражение
sin(a-b)-sin(П/2-a)*sin(-b)
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ronnie1471
= sin(a)*cos(b) - cos(a)*sin(b) + cos(a)*sin(b) = sin(a) * cos(b)
6 votes
Thanks 18
hlopushinairina
Sin(α-β)-sin(π/2-α)·sin(-β)=sin(α-β)+cosα·sinβ=
=sinα·cosβ-cosa·sinβ+cosα·sinβ=sinα·cosβ
7 votes
Thanks 13
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Answers & Comments
=sinα·cosβ-cosa·sinβ+cosα·sinβ=sinα·cosβ