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smchnc2004
07.02.2022 15:32
Геометрия
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1 John (read) a book now
2 What
(you do) tonight
3. Jack and Peter
(work) late today
4. Silvia
(not listen) to music
5 Mania
(sit) next to Paul
6 How many other students
(you study) with
7. The phone
(not ring)
8. The train to Glasgow
(leave) from platform 3
9.
(begin) to understand the Present Continuous now
10. Sue
(work) tonight
11. Listen! The telephone
(ring)
12. Ms. Johnson
(see) a customer at 3 o'clock
13. My Dad
(not have) his lunch now
14. The kids
(not study) tomorrow
15. It
(not rain) today​

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Ответы на вопрос:

Lala19962
Lala19962
4,4(58 оценок)
Sin в —отношение противолежащего  катета  a  к  гипотенузе sin b=ac\ab> > > > > > ab= ac: sinb=6: 2\v13 =3v13 ab^2=ac^2+bc^2, отсюда вс^2=ab^2-ac^2=(3\v13)^2-6^2=117-36=81 bc=9

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