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sven76crew
@sven76crew
August 2021
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помогите с первым, тригонометрия
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aleks41
1/(1+tg²α)+1/((1+ctg²α)=
1) 1+tg²α=1/cos²α;
2)1/1/cos²α=cos²α.
3) 1+ctg²α=1/sin²α;
4) 1/1/sin²α=sin²α.
5) cos²α+sin²α=1.
Ответ: 1.
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Answers & Comments
1) 1+tg²α=1/cos²α;
2)1/1/cos²α=cos²α.
3) 1+ctg²α=1/sin²α;
4) 1/1/sin²α=sin²α.
5) cos²α+sin²α=1.
Ответ: 1.