Maths - CAST
What does CAST tell you?
When the values of trig functions are positive or negative.
What is the inequality for an acute angle?
\[0^{\circ} < x < 90^{\circ}\]
What is the inequality for an obtuse angle?
\[90^{\circ} < x < 180^{\circ}\]
What is the inequality for a small reflex angle?
\[180^{\circ} < x < 270^{\circ}\]
What is the inequality for a large reflex angle?
\[270^{\circ} < x < 360^{\circ}\]
