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Ангелина21
@Ангелина21
July 2022
1
3
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1) вычислите
Sin(-p/4)+ 3 cos p/4 - th p/6 + ctg p/3
2) Упростите выражение
А) 1-cos^2alfa
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sedinalana
Verified answer
1
-√2/2+3√2/2-√3/3+√3=√2+2√3/3=(3√2+2√3)/3
2
1-cos²a=sin²a
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Answers & Comments
Verified answer
1-√2/2+3√2/2-√3/3+√3=√2+2√3/3=(3√2+2√3)/3
2
1-cos²a=sin²a