Absent 3/21/25

Solve on the domain [0,2π)
cos x + 1 = 0

• 0
• No solution
• π
• 3π/2

• A
• B
• C
• D

Solve for 0≤x≤2π

4cos²x - 2 = 0

• π/3, 5π/3

• π/4, 7π/4

• 3π/4, 5π/4

• π/6, 11π/6

• A
• B
• C
• D

Solve the trigonometric equation in the interval  $\left(0,\ 2\pi\right]$ .

 $11\sin x+5=\sin x$  

•  $\frac{\pi}{3},\frac{2\pi}{3}$  

•  $\frac{\pi}{6},\frac{5\pi}{6}$  

•  $\frac{7\pi}{6},\frac{11\pi}{6}$  

•  $\frac{\pi}{6},\frac{5\pi}{6},\frac{7\pi}{6},\frac{11\pi}{6}$  

Solve the trigonometric equation in the interval  $\left(0,\ 2\pi\right]$ .

 $2\sin3x+\sqrt{3}=0$  

•  $\frac{\pi}{2},\frac{2\pi}{3}$  

•  $\frac{4\pi}{3},\frac{5\pi}{3}$  

•  $\frac{4\pi}{9},\frac{5\pi}{9}$  

•  $\frac{\pi}{6},\frac{4\pi}{9},\frac{2\pi}{9},\frac{5\pi}{9}$  

Which of the following are the correct solutions for the trigonometric equation in the interval  $\left(0,\ 2\pi\right]$ ? 

CHOOSE ALL THAT APPLY

 $\cos x=0$  

•  $\frac{3\pi}{2}$  

•   $\pi$  
  

•  $2\pi$  

•  $\frac{\pi}{2}$  
  

• No solution