Basic Unit Circle Angles

1/2

1/2

sin(30)

1/2

cos(60)

sqrt3/2

cos(30)

sqrt3/2

sin(60)

sqrt2/2

sin(45)

sqrt2/2

cos(45)

1

tan(45)

1/sqrt3

tan(30)

sqrt3

tan(60)

y-axis

sin axis

x-axis

cos axis

(++)

quadrant 1

(-+)

quadrant 2

(—)

quadrant 3

(+-)

quadrant 4