Trigonometry XI

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	Introduction
	Angles
	Measurement of Angles
	Radian measure [Circular system]
	Grade measure (Centesimal system or French system)
	Trigonometric Functions
	Circular Functions
	Periodic Functions
	The variation of the values
	Even and Odd functions
	Tangent Functions
	Other Circular Functions
	Identical properties of circular functions and trigonometric functions
	Values of Trigonometric Functions
	Signs of Trigonometric Ratios
	Trigonometric ratios of Allied Angles
	Sum Formula
	Trigonometric Ratios of Multiple and Sub-multiple Angles
	Trigonometric Ratios of multiple and some special angles
	Conditional Trigonometric Identities
	Graphs
	Graph of y = sin x
	Graph of y = cosx
	Graph of y = tanx
	Points observed from the graph
	Summary
Animations
	Trigonometric Functions
	Graphs of Trigonometrical Functions

Subjects
English
Math
Geometry