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izibelka1234
@izibelka1234
July 2022
1
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1.Вычислите
a)sin530-cos 22p/9
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shevtsovavalia
Sin530°-cos22π/9=sin(360°+170°)-cos(2π+4π/9)=sin170°-cos4π/9=
=sin10°-cos80°=sin10°-sin10°=0
5 votes
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Answers & Comments
=sin10°-cos80°=sin10°-sin10°=0