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kekich228
@kekich228
July 2022
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a)cos(8a)+2sin^2(4a)
б)(sin(a+t)-sin(a-t)/cos(a+t)-cos(a-t)
в)sin((pi/2)+a)+cos(pi+a)+tg((3pi/2)-a)+ctg(2pi-a)
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esedullah
A) cos(8a) + 2sin²(4a) = cos²4a - sin²4a + 2sin²4a = cos²4a + sin²4a = 1
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