solving trig functions

Solve the trigonometric function on the interval 0 ≤ θ < 2π

2 sin ² θ - 1 = 0

• θ = 0, π/2, π, 3π/2, 2π

• θ = π/4, 3π/4 , 5π/4 , 7π/4

• θ = 0, π , 2π

• θ = π/3, 5π/3

Solve the trigonometric function on the interval 0 ≤ θ < 2π

2cos² θ + 9cosθ - 5 = 0

• θ = 0, π/2, π, 3π/2, 2π

• θ = π/4, 3π/4 , 5π/4 , 7π/4

• θ = 0, π , 2π

• θ = π/3, 5π/3

Which equation should be used to find the missing side length?

Solve on the domain [0, 2π)
2sin x cos x = √2 cos x

• π/2, 3π/2
• 0, π/4, 3π/4
• π/2, 3π/2, π/4, 3π/4
• No solution

Please solve on the interval 0≤θ≤2π
sin θ = 0

• θ={ 0, π/2, π, 3π/2, 2π }
• θ={ π/4, 3π/4 , 5π/4 , 7π/4 }
• θ={ 0, π , 2π }
• θ={ π/3, 5π/3 }

Solve the following for 0≤ θ <2π.

sinθ= 1 ⁄ 2

• θ = π/4

• θ = π/6 , 5π/6

• θ = 7π/6, 11π/6

• θ = -π/6

Solve the following for 0°≤ θ <360°.

sinθ= √3 ⁄ 2

• θ = 60°

• θ = 30°

• θ = 60°, 120°

• θ = 120°, 240°

Please solve on the interval 0≤θ≤2π
2 cos θ - 1 = 0

• θ={ 0, π/2, π, 3π/2, 2π }
• θ={ π/4, 3π/4 , 5π/4 , 7π/4 }
• θ={ 0, π , 2π }
• θ={ π/3, 5π/3 }

Solve for the missing angle

• 50
• 0.053
• 36.9
• 95

sin(x)csc(x) + tan²(x)

• A. csc²(x)

• B. cot²(x)

• C. -sec²(x)

• D. sec²(x)