Evaluate trig functions -no calculator

sin 7π/6

• 1/2
• -1/2
• √3/2
• -√3/2

cos 150^o

• -1/2

• 1/2

• √3/2

• -√3/2

What are the coordinates of 60° on the unit circle?

• (0, 1)
• (1/2, √3/2)
• (√3/2, 1/2)
• (√2/2, 1/2)

What is the tan(7π/6)

• _√3

• -√3/3

• √3/3

• 1

tan 225º

• 1

• -1

• 0

• undefined

tan (-π)

• undefined
• 0
• 1
• -1

sec 3π/2

• 0
• undefined
• 1
• -1

cot 3π/4

• -√2/2
• -1
• 1
• √2/2

• -1/2
• 1/2

• -1
• 1
• undefined