Тригонометрія. Повторення. 10
Authored by Тетяна Гула
Mathematics
1st - 12th Grade
Used 5+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Градусною мірою кута 5π ⁄ 6 є кут:
30°
150°
120°
180°
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Знайти множину значень функції у = 2 соs х:
[-1;1]
[-2;0]
[-2;2]
[-1; 3]
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Визначити знак виразу: sin157º·соs219º:
˂ 0;
˃ 0
0
≥ 0
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Спростити вираз: ctg2 α· ( 1 - cos2α )
sinα
cosα
cos2 α
sin2 α.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Спростити вираз: sin (270⁰ +α )
sin α
- cosα
- sin α
cosα
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Знайдіть sinα, якщо cosα = - 5∕13 , якщо π < α < 3π∕2
12∕13
- 12∕13
0
-1
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Знайдіть значення виразу:
cos125⁰ + cos55⁰
0
1
-√2∕2
-1
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