hệ thức cơ bản (CT LƯỢNG GIÁC)

0.0(0)
Studied by 0 people
call kaiCall Kai
Locked
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/11

encourage image

There's no tags or description

Looks like no tags are added yet.

Last updated 2:24 AM on 8/6/26
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai
Chat

No analytics yet

Send a link to your students to track their progress

12 Terms

1
New cards

sin² a + cos² a =?

sin² a + cos² a = 1

2
New cards

tan(a) * cot(a) =?

tan(a) * cot(a) = 1

3
New cards

tan(a) =? (với a ≠ π/2 + kπ)

  • tan(a) = sin(a) / cos(a)

sin(a) / cos(a) =?

  • tan(a) = sin(a) / cos(a)

4
New cards

cot(a) =?

  • cot(a) = cos(a) / sin(a) (với a ≠ kπ)

cos(a) / sin(a)= ?

  • cot(a) = cos(a) / sin(a) (với a ≠ kπ)

5
New cards

1 / cos²(a) = ? (với a ≠ π/2 + kπ)

  • 1 / cos²(a) = 1 + tan²(a) (với a ≠ π/2 + kπ)

1 + tan²(a)= ?

  • 1 / cos²(a) = 1 + tan²(a) (với a ≠ π/2 + kπ)

6
New cards

1 / sin²(a) =? (với a ≠ kπ)

  • 1 / sin²(a) = 1 + cot²(a)

1 + cot²(a)= ?

  • 1 / sin²(a) = 1 + cot²(a)

7
New cards

sin²(a) = ?

  • sin²(a) = (1 - cos a)(1 + cos a)

(1 - cos a)(1 + cos a) =?

  • sin²(a) = (1 - cos a)(1 + cos a)

8
New cards

cos²(a) = ?

  • cos²(a) = (1 - sin a)(1 + sin a)

(1 - sin a)(1 + sin a)=?

  • cos²(a) = (1 - sin a)(1 + sin a)

9
New cards

  • sin²(a) =?

  • sin²(a) = tan²(a) / (1 + tan²(a))

tan²(a) / (1 + tan²(a))=?

  • sin²(a) = tan²(a) / (1 + tan²(a))

10
New cards

cos²(a) =?

  • cos²(a) = cot²(a) / (1 + cot²(a))

cot²(a) / (1 + cot²(a)) =?

  • cos²(a) = cot²(a) / (1 + cot²(a))

11
New cards

1 / cos²(a) = ?

  • 1 / cos²(a) = (1 + cot²(a)) / cot²(a)

(1 + cot²(a)) / cot²(a)= ?

  • 1 / cos²(a) = (1 + cot²(a)) / cot²(a)

12
New cards

1 / sin²(a) = ?

  • 1 / sin²(a) = (1 + tan²(a)) / tan²(a)

(1 + tan²(a)) / tan²(a) =?

  • 1 / sin²(a) = (1 + tan²(a)) / tan²(a)