Solving Trig Equations

x = no solution

Solve 2cosx - 5 = 3cosx - 2 where 0 ≤ x < 360

x = 30, 150

Solve 2sinx - 1 = 0 where 0 ≤ x < 360

x = 90, 210, 330

Solve 2sin²x - sin x - 1 = 0 where 0 ≤ x < 360 (hint: factor)

x = 90, 270

Solve 2sin²x-2=0 where 0 ≤ x < 360

x = π/2, 3π/2

Solve 3cosx = 0 where 0 ≤ x < 2π

x= π/6, 11π/6

Solve cosx = √3/2 where 0 ≤ x < 2π

x = 0, 90, 180

Solve sin²x - sinx = 0 where 0 ≤ x <360 (Hint: factor)