sin (90° - α) =
Синус, косинус и тангенс кута от 0 до 180 градусов

Quiz
•
Mathematics
•
9th Grade
•
Medium
Анастасія Олександрівна
Used 2+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos α
sin α
- cos α
- sin α
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos (90° - α) =
cos α
sin α
- sin α
- cos α
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin (180° - α) =
sin α
- sin a
cos α
- cos α
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos (180° - α) =
- sin a
- cos α
cos α
sin α
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Вкажите основную тригонометрическую тождественность
sin² α - cos² α = 1
sin α + cos α = 1
sin α - cos α = 1
sin² α + cos² α = 1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tg (180° - α) =
- ctg α
tg α
ctg α
- tg α
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos 120° =
1
½
- ½
-1
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tg 120° =
- ½
½
-√3
1
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Чему равно cos (180° - α), если cos α = 0,7
0,7
- 0,3
0,3
- 0,7
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