The CAST Diagram

1
The graph of
2
The graph of
3
The graph of
4
The CAST Diagram
All positive
Sin only positive
1st Quadrant
2nd Quadrant
3rd Quadrant
4th Quadrant
Tan only positive
Cos only positive
5
Example Given that ? lies between 0 and 360 and
that indicate possible
values of ? on separate diagrams. State the
possible values of ?.
6
Example Given that ? lies between 0 and 360 and
that indicate possible
values of ? on separate diagrams. State the
possible values of ?.
7
Example Solve each of the following equations for
, giving your answers
correct to 2 decimal places (i) (ii) (iii)
8
Example Solve the equation in
the range .