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Guf08
@Guf08
August 2022
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Корень из 48•cos^2pi/12-корень из 12; Корень из 2-корень из 8•sin^2(7pi/8).
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sedinalana
1
4√3*(1+сosπ/6)/2-2√3=2√3(1+√3/2)-2√3=2√3+3-2√3=3
2
√2-2√2*sin²(π-π/8)=√2-2√2*sin²π/8=√2-2√2*(1-cosπ/4)=
=√2-2√2(1-√2/2)=√2-2√2+2=2-√2
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Answers & Comments
4√3*(1+сosπ/6)/2-2√3=2√3(1+√3/2)-2√3=2√3+3-2√3=3
2
√2-2√2*sin²(π-π/8)=√2-2√2*sin²π/8=√2-2√2*(1-cosπ/4)=
=√2-2√2(1-√2/2)=√2-2√2+2=2-√2