Спростити ( 1 + ctg2α)⋅ cos2α
Тригонометрія. 11 М. Повторення.

Quiz
•
Mathematics
•
11th Grade
•
Medium
Наталия Рутковская
Used 4+ times
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27 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1
tg2α
sin2α
ctg2α
cos 2α
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
У якій чверті розташована точка одиничного кола, яка відповідає куту 250⁰
І
ІІ
ІІІ
ІV
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Яка з наведених рівностей НЕПРАВИЛЬНА?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(1 - sin 2 x) • tg 2 x =
sin 2x
sin 2 x
cos 2x
ctg 2 x
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Серед наведених функцій визначіть парну функцію:
y=sin x
y=tg x
y=cos x
y=ctg x
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Визначте знак виразу ctg 204º ·sin164º.
визначити неможливо
+
-
0
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Спростіть вираз 6 + sin2α + cos2α .
7
5
6
8
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