4.2 and 4.4 Review

In what quadrant are only sin/csc positive?

• I

• II

• III

• IV

If tanx<0 and cosx>0, what quadrant does x lie in?

• I

• II

• III

• IV

If 

 $\sin x=\frac{3}{5}$  and  $\cos x<0$ , what is cosx? 

•  $-\frac{4}{5}$  

•  $\frac{4}{5}$  

•  $\frac{5}{3}$  

•  $\frac{3}{5}$  

cos 5π/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)

• √3/3
• √3
• 1
• undefined

Which of the following has a sine value of -1/2? 

•  $\frac{5\pi}{3}$  

•  $30\degree$  

•  $330\degree$  

•  $\frac{2\pi}{3}$  

If tan(x) = undefined, what is cot(x)?

• 0

• undefined

• Not enough information

• 1

tanθ is positive in

• the 1st and 2nd quadrants

• the 1st and 3rd quadrants

• the 1st and 4th quadrants

• the 2nd and 3rd quadrants

What are 2 solutions to the equation

 $\sin x=-\frac{1}{2}$  

•  $\frac{7\pi}{6},\frac{11\pi}{6}$  

•  $\frac{2\pi}{3},\frac{4\pi}{3}$  

•  $\frac{\pi}{3},\frac{5\pi}{3}$  

•  $\frac{\pi}{6},\frac{5\pi}{6}$