Предмет: Математика, автор: catcat1189yy

упростите выражение .Помогите плиз ​

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Автор ответа: nastyainet
0

Пошаговое объяснение:

sin(\frac{1}{1-cosx} -\frac{1}{1+cosx}) =sinx(\frac{1+cosx-1+cosx}{(1-cosx)(1+cosx)})= sinx(\frac{2cosx}{1-cos^{2} x}) = \frac{2sinx*cosx}{sinx^{2} }  = 2ctgx

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Words and expressions:
called называемый, называться
island остров
total общий
area территория
to vary отличаться
The Themes Темза
the deepest самый глубокий

shipbuilding судостроение
places of interest достопримечательности
bank берег
Westminster Abbey Вестминстерское Аббатство
Monarch монарх
crown короновать
eternal rest вечный покой

Упражнение 1. Дополните предложения словами из текста.
1. The United Kingdom of Great Britain and Northern Ireland is situated on _______ called the British Isles.
2. The smaller island is _____ and there are about ______ small islands.
3. The total area of the U.K. is 244.000 _______ with a population of 56 ______ .
4. The greater part of the ______ is urban.
5. Most people live in numerous _______.
6. Mountains in Scotland, Wales and _______ are not very _____.
7. _____ is famous for its beautiful lakes.
8. London is one of the greatest towns _______.
9. There are a lot of _____ in the parks.
10. London Is situated upon both banks of the______ .
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