trig identities

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

1/26

Last updated 1:25 AM on 1/31/23
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai

No analytics yet

Send a link to your students to track their progress

27 Terms

1
New cards
sin(−𝜃) \=
− sin 𝜃
2
New cards
cos(−𝜃) \=
cos 𝜃
3
New cards
tan(−𝜃) \=
− tan 𝜃
4
New cards
csc(−𝜃) \=
− csc 𝜃
5
New cards
sec(−𝜃) \=
sec 𝜃
6
New cards
cot(−𝜃) \=
− cot 𝜃
7
New cards
tan 𝜃 \=
sin 𝜃/cos 𝜃
8
New cards
cot 𝜃 \=
cos 𝜃/sin 𝜃
9
New cards
sin^2 𝜃 + cos^2 𝜃 \=
1
10
New cards
tan^2 𝜃 + 1 \=
sec^2 𝜃
11
New cards
cot^2 𝜃 + 1 \=
csc^2 𝜃
12
New cards
sin 2𝜃
\= 2 sin 𝜃cos 𝜃
13
New cards
cos 2𝜃
\= cos^2 𝜃 − sin^2 𝜃
14
New cards
cos 2𝜃
\= 2 cos^2 𝜃 − 1
15
New cards
cos 2𝜃
\= 1 − 2 sin^2 𝜃
16
New cards
tan 2𝜃
\= 2 tan 𝜃/1 − tan2
17
New cards
sin(𝐴± 𝐵) \=
sin 𝐴 cos𝐵 ± cos 𝐴 sin 𝐵
18
New cards
cos(𝐴± 𝐵) \=
cos𝐴 cos 𝐵 ∓ sin 𝐴 sin𝐵
19
New cards
tan(𝐴 ± 𝐵) \=
(tan 𝐴 ± tan𝐵)/(1 ∓ tan𝐴 tanB)
20
New cards
sin 𝐴 sin 𝐵 \=
1/2 [cos(𝐴 − 𝐵) − cos(𝐴 + 𝐵)]
21
New cards
cos 𝐴 cos 𝐵 \=
1/2[cos(𝐴 + 𝐵) + cos(𝐴 − 𝐵)]
22
New cards
sin 𝐴 cos 𝐵 \=
1/2 [sin(𝐴 + 𝐵) + sin(𝐴 − 𝐵)]
23
New cards
cos 𝐴 sin 𝐵 \=
1/2 [sin(𝐴 + 𝐵) − sin(𝐴 − 𝐵)
24
New cards
sin𝐴 + sin𝐵 \=
2 sin[(𝐴+𝐵)/2] cos [(𝐴−𝐵)/2]
25
New cards
sin𝐴 − sin𝐵 \=
2 cos [(𝐴+𝐵)/2]sin[(𝐴−𝐵)/2]
26
New cards
cos𝐴 + cos𝐵 \=
2 cos [(𝐴+𝐵)/2] cos [(𝐴−𝐵)/2]
27
New cards
cos𝐴 − cos𝐵 \=
−2 sin [(𝐴+𝐵)/2]sin[(𝐴− 𝐵)/2]