Chapter 4 Trig functions of 30-45-60 angles

30^o

pi/6

45^o

pi/4

60^o

pi/3

sin 30 or pi/6

1/2

sin 45 or pi/4

root 2/2

sin 60 or pi/3

root 3/2

cos 30 or pi/6

root 3/2

cos 45 or pi/4

root 2/2

cos 60 or pi/3

1/2

tan 30 or pi/6

root 3/3

tan 45 or pi/4

1

tan 60 or pi/3

root 3

csc 30 or pi/6

2

csc 45 or pi/4

root 2

csc 60 or pi/3

2 root 3/3

sec 30 or pi/6

2 root 3/3

sec 45 or pi/4

root 2

sec 60 or pi/3

2

cot 30 or pi/6

root 3

cot 45 or pi/4

1

cot 60 or pi/3

root 3/3