The 6 Trig Functions on the Unit Circle

True or False. All trig functions are positive in Quadrant IV.

• True

• False

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 tan Θ if cos Θ is -^√3/₂ and

π < Θ < ^3π/₂

• tan Θ = ^√3/₃

• tan Θ = 1

• tan Θ = -^√3/₃

• tan Θ = -1

Which trig functions are positive in the 3rd quadrant?

• Sine

• Cosine

• Tangent

• Cosecant

• Cotangent

What is the value of cosine at 0

• 0

• 1/2

• 1

• √3 / 2

At what point are sine and cosine the same value?

• 0

• 90

• 45

• 60

sin 2π/3

• 1/2

• -1/2

• √3/2

• -√3/2