Exact Value of Trig Functions in Unit Circle

Given the ordered pair (-¹/₂ , ^√3/₂), what is the value of cosine?

• √3

• ^-1/₂

• ^√3/₂

• ^√3/₃

On the unit circle, which radian measure represents the point (^√3/₂ , -¹/₂)

• ^11π/₆

• ^5π/₃

• ^7π/₆

• ^4π/₃

Which of the following are true if tan Θ = √3 and lies in the first quadrant?

• sin Θ = ^√3/₂

• sin Θ = ¹/₂

• cos Θ = ^√3/₂

• cos Θ = ¹/₂

• sec Θ = 2

Find the exact value of the trig function tan ^7π/₆

• ^√3/₃

• √3

• -^√3/₃

• ^√3/₂

• ½
• √2/2
• √3/2
• 1

sin π =

• 0

• 1

• -1 

• undefined

• A
• B
• C
• D

• A
• B
• C
• D

Using the Unit Circle, find the exact value of this trig function.

• 1

• 0

• -1

• undefined

• The correct answer is not listed

What is sin 45°?

• 1
• ^√3/₂
• ½
• ^√2/₂