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Знайти cos a якщо sin a дорівнює п/2<а<п
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Предмет:
Математика -
Автор:
paulinazrgx - 6 лет назад
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Ответы 1
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ВСПОМИНАЕМsin²α + cos²α = 1Отсюдаcos α = +/- √(1 - sin²α) Смотрим на угол 90 < α 180 и выбираем - косинус меньше 0.ОТВЕТ: - (минус) √(1-sin²α)
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Автор:
maggie-maedelacruz - 6 лет назад
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Надо ответить на вопросы из текста
Вопросы
1.Who was Socrates?
2.What did the fellow the great philosopher met one day say?
3.Why would Socrates like the follow to pass a test?
4.What kind of test was it?
5.What was the first filter of the test?
6.What was the kea word of the second filter of the test?
7.What was the kea word of the third filter of the test?
8.Do you agree with the lesson of this story?
9.Do you participate in loose talks to curb your boredom?
10.Do you talk behind the back about your near and dear friends?
In ancient Greece,Socrates was reputed to hold knowledge in high esteem.One day one fellow met the great philosopher and said,"Do you know what I just heard about your friend?"Hold on a minute",Socrates replied."Before telling me anything i ' d like you to pass a little test.It is called the Triple Filter Test"."Triple filter?" "That s right", Socrates continued."Before you talk to me about my friend, it might be a good idea to take a moment and filter what you re going to say.That s why I can il the triple filter test.The first filter is Truth.Have you made absolutely sure that what you are about to tell me is true?" "No" the man said, "actually I just heard about it and".... " All rigt," said Socrates."So you don t know if it s true or not.Now let s try the second filter, the filter of Goodness.Is what you are about to tell me about my friend something good?" "No, on the contrary...."."So," Socrates continued," you want to tell me something bad about him,but you re not certain it s true.You may still pass the test though, because there s one filter left: the filter of Usefulness.Is what you want to tell me about my friend going to be useful to me?" "No, not really." "Well," concluded Socrates, "If what you want to tell me is neither true nor good nor even useful, why tell it to me at all?"-
Предмет:
Английский язык -
Автор:
furballzkxl - 6 лет назад
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Визначте способи словотворення поданих слів (морфологічний розбір слова за частинами слова)
Предивно, прибудувати, щорічний, святковий, стиха, вискочив, безсмертний-
Предмет:
Українська мова -
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kyleigh7wsq - 6 лет назад
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