Unit 4A

Trigonometry Part 1

Lesson 4: Trigonometric Function Graphing Review

The Reciprocal Functions

The reciprocal functions, «math style=¨font-family:Verdana¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»f«/mi»«mi mathvariant=¨normal¨»(«/mi»«mo»§#952;«/mo»«mi mathvariant=¨normal¨»)«/mi»«mo»=«/mo»«mi»csc«/mi»«mo»§#952;«/mo»«mi mathvariant=¨normal¨»,«/mi»«mo»§#160;«/mo»«mi»f«/mi»«mi mathvariant=¨normal¨»(«/mi»«mo»§#952;«/mo»«mi mathvariant=¨normal¨»)«/mi»«mo»=«/mo»«mi»sec«/mi»«mo»§#952;«/mo»«mi mathvariant=¨normal¨»,«/mi»«/mrow»«/mstyle»«/math» and «math style=¨font-family:Verdana¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»f«/mi»«mi mathvariant=¨normal¨»(«/mi»«mo»§#952;«/mo»«mi mathvariant=¨normal¨»)«/mi»«mo»=«/mo»«mi»cot«/mi»«mo»§#952;«/mo»«/mrow»«/mstyle»«/math», can also be graphed with the help of special triangles or the unit circle.

The graphs for these functions are shown below.