4. Generalization of the concept of10 angle

4.2 Arc system

4.3 Trigonometric Functions of Arbitrary Roles

4.4 Work-cost relationship of trigonometric functions with the same angle

4.5 Inductive formula of sine and cosine

Second, the trigonometric function of the sum and difference of two angles

4.6 Sine, cosine and tangent of sum and difference of two angles

4.7 Sine, Cosine and Tangent of Double Angle

Three. Images and properties of trigonometric functions

4.8 Images and Properties of Sine and Cosine Functions

4.9 Image of function y=Asin(ωx+ρ)

4. Properties of10 image and tangent function

4. 1 1 Find the angle with the known trigonometric function value.

The fifth chapter plane vector

First, the vector and its position.

5. 1 vector

5.2 Addition and subtraction of vectors

5.3 Product of real number and vector

5.4 Coordinate Transportation of Plane Vector

5.5 Fixed fractional points of line segments

5.6 Arithmetic of Sum of Quantities of Plane Vectors

5.7 Coordinate Representation of the Quantity Product of Plane Vector

5.8 Translation

Second, the declination triangle

5.9 sine theorem and cosine theorem

5. Application example of10 declination triangle