This is a unit circle that finds tangent the length of AD and the secant the length of BD you can move around the point C to find the tangent and secant of different angles measures.
1) Find the tangent and secant of 45° 2) Find the secant of 60° 3) Use a calculator to find the cosine of 60°? 4) What is similar between the secant of 60° and the cosine of 60°? 5) ** Bonus Why?