Solving Trig Equations Review

• θ = π / 6,  7π / 6
• θ = π / 6,  5π / 6
• θ = 5π / 6,  7π / 6
• θ = 7π / 6,  11π / 6

• θ = π /2, 3π /2 
• θ = π /2
• θ = 3π /2
• θ = π  

• 30, 150
  

• 60, 300
  

• 30, 330
  

• 60, 120
  

• 270

• 0

• 90

• 180

• 45, 225
  

• 45, 135
  

• 135, 225
  

• 45, 315
  

Solve for 0≤x≤2π

2sin²x - 5sinx + 2 = 0

• π/6, 5π/6

• 7π/6, 11π/6

• π/3, 2π/3

• 4π/3, 5π/3

Solve for 0≤x≤2π

3sin²x + sinx - 4 = 0

• 0, π

• π/2

• π/6, 5π/6

• 3π/2

Solve for 0≤x≤2π

4cos²x - 2 = 0

• π/3, 5π/3

• π/4, 7π/4

• 3π/4, 5π/4

• π/6, 11π/6

Solve for 0≤x≤2π

2cos²x + 3cosx = -1

• 0, 2π

• π

• 2π/3, 4π/3

• π/3, 5π/3