Trig 8.1-8.2

Which of the following is NOT
a solution to
sin θ = √(3) / 2 ?

• π / 3

• 2π / 3

• 5π / 3

• 7π / 3

Solve
cos²θ = ½ 
on θ∈[0, 2π)

• θ = π /4, 7π /4

• θ = π /4, 3π /4

• θ = 3π /4, 5π /4

• θ = π /4, 3π /4, 5π /4, 7π /4

Solve tanθ+1=2 on θ∈[0, 2π)

• 0 and π

• 3π/4 and 7π/4

• π/4 and 5π/4

• 3π/4 and 5π/4

Solve for all answers in [0, 360] for: sin(6x)=1

• 15, 75, 135, 195, 255, 315

• 15+60k

• 90+360k

• 15, 75, 125, 185, 245, 305

Solve for all answers in [0, 90] for: sec(x/2)=√2

• 90

• 45

• 315

• 630