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

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