Tỷ số lượng giác Bài 2

Quiz
•
Mathematics
•
9th Grade
•
Hard
Thùy Lê
Used 2+ times
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho tam giác ABC vuông tại A, đường cao AH và góc B = α (hình 40). Tỷ số AH/BH là?
sinα
cosα
tanα
cotα
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho tam giác ABC vuông tại A, đường cao AH và góc B = α (hình 40). Tỷ số AH/CH là?
sinα
cosα
tanα
cotα
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho tam giác ABC vuông tại A, đường cao AH và góc B = α (hình 40). Tỷ số AH/AClà?
sinα
cosα
tanα
cotα
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phát biểu nào sau đây đúng?
tanα.cosα = 1
tanα.sinα = 1
sinα.cosα = 1
tanα.cotα = 1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phát biểu nào sau đây đúng?
sin α = cos α
sin α = cos (90 + α)
sin α = cos (90 - α)
sin α = - cos α
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phát biểu nào sau đây đúng?
tan α = cot (90 - α)
tan α = cot α
tan α = cos (90 - α)
tan α = cot (90 + α)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phát biểu nào sau đây đúng?
cos α = sin α
cos α = sin (90 - α)
cos α = sin (90 + α)
cos α = - sin α
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