How many values of x with 0∘≤x<990∘ satisfy sinx=−0.31?
990 : 18 = 55
990° / 180° = 5.5
So there are only 5 values of x within 0° ≤ x < 990° that satisfy sin x = -0.31
They are:
x ≈ 198.059°
x ≈ 341.941°
x ≈ 558.059°
x ≈ 701.941°
x ≈ 918.059°
