1 Өрнекті ықшамдаңыз: (1-сosa)(1+сosa)

Тест:

Quiz
•
Mathematics
•
9th Grade
•
Medium
ablai esenbaev
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5 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
сos2a
1-cos2a
sin2a
sina
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2Өрнекті ықшамдаңыз: cos2a+1-sin2a
sin2a
2sin2a
cos2a
2cos2a
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
1
-1/2
1/2
-1
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
4. Есептеңіз: sin 7π/6
-1/2
1
-1
1/2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
5. Есептеңіз: tg(2π-a)
ctga
tga
-ctga
-tga
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