Unit Circle Quiz

Which degree is equivalent to  $\frac{\pi}{4}$  ?

•  $210\degree$  

•  $45\degree$  

•  $150\degree$  

•  $60\degree$  

What is the coordinate point at  $225\degree$  on the unit circle?

•  $\left(\frac{\sqrt{2}}{2},\frac{\sqrt{2}}{2}\right)$  

•  $\left(-\frac{\sqrt{2}}{2},\frac{\sqrt{2}}{2}\right)$  

•  $\left(-\frac{\sqrt{2}}{2},-\frac{\sqrt{2}}{2}\right)$  

•  $\left(\frac{\sqrt{2}}{2},-\frac{\sqrt{2}}{2}\right)$  

What is the radian measure at  $315\degree$  ?

•  $\frac{3\pi}{4}$  

•  $\frac{\pi}{2}$  

•  $\frac{7\pi}{4}$  

•  $\frac{7\pi}{6}$  

True or False. Only the cosine trig functions is positive in Quadrant II.

• True

• False

What is the order of the coordinate pairs for the points on the Unit Circle?

• $\left(\tan\theta,\sin\theta\right)$

• $\left(\cot\theta,\cos\theta\right)$

• $\left(\sin\theta,\cos\theta\right)$

• $\left(\cos\theta,\sin\theta\right)$

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

• True

• False

Which of the following is a negative coterminal angle of 165 degrees?

• 195

• 525

• -525

• -195

Convert 100⁰ to radians

• 5π/9
• π/2
• 5π/8
• 5π/6

Find sin(-240°)

• (√3)/2)

• (-1/2)

• (√2/2)

• (1/2)

Find cos(600°)

• (-1/2)

• (-√3/2)

• (√3/2)

• (√2/2)