Trigonometric Ratios of Compound Angles

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

1/11

flashcard set

Earn XP

Description and Tags

Flashcards covering key trigonometric ratios and identities for compound angles.

Last updated 2:09 AM on 4/18/26
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai

No analytics yet

Send a link to your students to track their progress

12 Terms

1
New cards

sin(A+B)

sinA cosB + cosA sinB.

2
New cards

sin(A-B)

sinA cosB - cosA sinB.

3
New cards

cos(A+B)

cosA cosB - sinA sinB.

4
New cards

cos(A-B)

cosA cosB + sinA sinB.

5
New cards

tan(A+B)

(tanA + tanB) / (1 - tanA tanB).

6
New cards

tan(A-B)

(tanA - tanB) / (1 + tanA tanB).

7
New cards

cot(A+B)

(cotA + cotB) / (1 - cotA cotB).

8
New cards

cot(A-B)

(cotA cotB +1) / (cotB - cotA).

9
New cards

sin(A+B+C)

sinA cosB cosC + cosA sinB cosC + cosA cosB sinC.

10
New cards

cos(A+B+C)

cosA cosB cosC - sinA sinB cosC - sinA cosB sinC - cosA sinB sinC.

11
New cards

Identity for sin(A+B) sin(A-B)

sin²A - sin²B = cos²B - cos²A.

12
New cards

Identity for cos(A+B) cos(A-B)

cos² A - sin²B = cos² B - sin² A.