Unit Circle Flashcards

sin45°

(sqr.2)/2

cos45°

(sqr.2)/2

tan45°

1

sin30°

1/2

cos30°

(sqr.3)/2

tan30°

(sqr.3)/3

sin60°

(sqr.3)/2

cos60°

1/2

tan60°

sqr.3

csc45°

sqr.2

sec45°

sqr.2

cot45°

1

csc30°

2

sec30°

(2 sqr.3)/3

cot30°

sqr.3

csc60°

(2 sqr.3)/3

sec60°

2

cot60°

(sqr.3)/3

Coordinates of 90°

(0,1)

Coordinates of 180°

(-1,0)

Coordinates of 270°

(0,-1)

Coordinates of 360°

(1,0)

90° in radians

pi/2

60° in radians

pi/3

45° in radians

pi/4

30° in radians

pi/6

180° in radians

pi

In quadrant 1

All values are positive

In quadrant 2

Only sin (y) is positive

In quadrant 3

Only tan (y/x) is positive

In quadrant 4

Only cos (x) is positive

Quadrant 1 spans

0° to 90°

Quadrant 2 spans

90° to 180°

Quadrant 3 spans

180° to 270°

Quadrant 4 spans

270° to 360°

Absolute value of 60° coordinates

(1/2, (sqr.3)/2)

Absolute value of 45° coordinates

((sqr.2)/2, (sqr.2)/2)

Absolute value of 30° coordinates

((sqr.3)/2, 1/2)