Trigonometry/Collection of Problems/Line Values and Graphs of Trigonometric Functions

Using the diagram, answer the following questions:

1.	Can you suggest a way of remembering that ${\overrightarrow {AB}}$ represents the tangent of $\theta$?
2.	Can you suggest a way of remembering that ${\overrightarrow {FE}}$ represents the cotangent of $\theta$?
3.	Can you suggest a way of remembering that ${\overrightarrow {OB}}$ represents the secant of $\theta$?
4.	Can you suggest a way of remembering that ${\overrightarrow {OE}}$ represents the cosecant of $\theta$?