
Тест по математике для 9 класса

Quiz
•
Mathematics
•
10th Grade
•
Hard
Xolida Sobirova
FREE Resource
22 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если sinα=4/5 и 0<α<π/2, найдите cosα.
cosα=3/5
cosα=4/5
cosα=−3/5
cosα=−4/5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если a1=3 и d=4, найдите пятый член арифметической прогрессии.
a5=22
a5=17
a5=27
a5=19
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Используя формулы, сопоставьте правильные ответы.
I-D, II-B, III-C, IV-D
I-A, II-A, III-C, IV-C
I-A, II-A, III-C, IV-B
I-A, II-C, III-D, IV-B
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если tgα=2, найдите значение выражения 3sinα+2cosα/5sinα−3cosα.
8/7
−8/7
6/7
−6/7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если sinα−cosα=0,8, найдите значение sin²α.
0,84
0,48
0,36
0,64
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Упростите sin³α/sinα−cos³α/cosα.
2
cos²α
−2
sin²α
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Упростите sinα−sin³α+sin⁵α−sin⁷α/cosα+cos³α+cos⁵α+cos⁷α.
ctgα
tgα
−ctgα
−tgα
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