Выберите вариант ответа:
1. Если tgx=3, то
Основное тригонометрическое тождество
Quiz
•
Mathematics
•
5th Grade
•
Hard
Юрий Гордеев
Used 6+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выберите вариант ответа:
1. Если tgx=3, то
а) ctgx=1/3
б) ctgx=3
в) ctgx=-1/3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выберите вариант ответа:
2. Если sinx=0,2, a cosx=0,4, то:
а) tgx=2
б) tgx=0,5
в) tgx=0,6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выберите вариант ответа:
3. Если tgx=2, то 1/cos 2x равно:
а) 3
б) 5
в) 1/4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выберите вариант ответа:
4. Приведите функцию sin (π/2-α):
а) sinα
б) -cosα
в) cosα
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выберите вариант ответа:
5. Приведите функцию cos (8π+α):
а) sinα
б) cosα
в) –sinα
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Чему равно выражение:
1) sin2x+cos2x
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