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wolf981121
@wolf981121
August 2022
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Допишите формулы плиз слишком много д/з самое лёгкое вам
cos²α+sin²α...
cos²α...
sin²α-1...
1-cas²α...
1+tg²α...
1-cos²α
ctg-через тригом. единицы
ctg-через sinα и cosα
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Answers & Comments
ludkagrechka
Cos^2a+sin^2a=1
cos^2a=1-sin^2a
sin^2a-1=-cos^2a
1-cos^2a=sin^2a
1+tg2a=1/cos^2a
ctg=cos(a)/sin(a)
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Answers & Comments
cos^2a=1-sin^2a
sin^2a-1=-cos^2a
1-cos^2a=sin^2a
1+tg2a=1/cos^2a
ctg=cos(a)/sin(a)