Sin Cos and Tan on Unit Circle Radians

What is the value of cosine at 135

• 0

• 1/2

• √2 /2

• -√2 /2

What is the value of sine at 210?

• 1/2

• -1/2

• √3 / 2

• -√3 / 2

sin 7π/6

• 1/2

• -1/2

• √3/2

• -√3/2

What is the exact coordinates of  3π/4 on the unit circle?

• (−√2∕2, √2∕2)

• (−√2∕2, −√2∕2)

• (−√3∕2, −√2∕2)

• (√2∕2, −√2∕2)

What is the value of cosine at 270

• 0

• 1

• -1

What is the value of cosine at 315

• 0

• 1

• √2 / 2

• -√2 /2

What is the value of sine at 150

• 0

• 1/2

• 1

• √3 / 2

What is the radius of a unit circle?

• 1

• 2

• 1/2

• 0

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