Спростіть вираз 2sin 70° cos 70°.

Тригонометричні формули(подвійний кут, додавання)

Quiz
•
Mathematics
•
10th Grade
•
Easy
Анна Шека
Used 1+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos 140°
2 sin 140°
sin 140°
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Спростіть вираз.
cos 20°
2 sin 20°
sin 20°
2cos 20°
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Обчисліть.
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Обчисліть.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Спростіть вираз sin 3α cos2α+ sin 2α cos3α.
cos 5α
sin 6α
sin 5α
cos 6α
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Спростіть вираз cos3α cos 2α+sin 3α sin 2α.
cos α
cos 6α
sin 5α
cos 5α
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Обчисліть вираз cos20° cos 40°-sin 20° sin40°.
0
1
0,5
√3/2
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Спростіть вираз 2cos22α +sin22α.
4
2
1
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Спростіть вираз
4
2
sin 2x
sin x
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