sin2 α + cos2 α = 1
tg α · ctg α = 1
tg α =
ctg α =
tg α =
ctg α =
sin (α + β) = sin α · cos β + cos α · sin β
sin (α – β) = sin α · cos β – cos α · sin β
cos (α + β) = cos α · cos β – sin α · sin β
cos (α – β) = cos α · cos β + sin α · sin β
tg (α + β) =
tg (α – β) =
ctg (α + β) =
ctg (α – β) =
sin α + sin β = 2 sin cos
sin α – sin β = 2 cos sin
cos α + cos β = 2 cos cos
cos α – cos β = -2 sin sin
tg α + tg β =
tg α – tg β =
ctg α + ctg β =
ctg α – ctg β =
α [°] |
0° |
30° |
45° |
60° |
90° |
180° |
sin α |
0 |
|
|
|
1 |
0 |
cos α |
1 |
|
|
|
0 |
-1 |
tg α |
0 |
|
1 |
|
nie istnieje |
0 |
ctg α |
nie istnieje |
|
1 |
|
0 |
nie istnieje |
α [rad] |
0 |
|
|
|
|
π |
|
I ćwiartka |
II ćwiartka |
II ćwiartka |
III ćwiartka |
III ćwiartka |
IV ćwiartka |
IV ćwiartka |
I ćwiartka |
β |
90° - α |
90° + α |
180° - α |
180° + α |
270° - α |
270° + α |
360° - α |
360° + α |
sin α |
cos α |
cos α |
sin α |
- sin α |
- cos α |
- cos α |
- sin α |
sin α |
cos α |
sin α |
- sin α |
- cos α |
- cos α |
- sin α |
sin α |
cos α |
cos α |
tg α |
ctg α |
- ctg α |
- tg α |
tg α |
ctg α |
- ctg α |
- tg α |
tg α |
ctg α |
tg α |
- tg α |
- ctg α |
ctg α |
tg α |
- tg α |
- ctg α |
ctg α |
β |
- α |
+ α |
π - α |
π + α |
π - α |
π + α |
2π - α |
2π + α |