Mathematics

Problem

Which one of the following inequalities correctly describes the range of an obtuse angle

x\ (^{\circ})

? a)

90^{\circ} \le x < 180^{\circ}

180^{\circ} < x < 360^{\circ}

90^{\circ} < x < 180^{\circ}

90^{\circ} < x \le 180^{\circ}