Упростите выражение: cos(-a)-cos(2π+a)

6 вариант (9)

Quiz
•
Mathematics
•
9th Grade
•
Medium

B B
Used 9+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
cos a
0
2cos a
-2cos a
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Найдите радианную меру угла 135 градусов
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Вычислите C26
15
30
60
90
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Выберите верное утверждение
sinα - отрицательный, cosα - положительный
sinα - положительный, cosα - отрицательный
sinα - отрицательный, cosα - отрицательный
sinα - положительный, cosα - положительный
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Вычислите шестой член прогрессии, если ее первый член равен 3, а разность 5
18
13
28
33
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Продолжите числовую последовательность 1,3,9,27
54
81
72
99
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