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### GCE O-Level A Maths topics

###### We have plenty of *free lessons* for you to watch

### 1Solving Linear Equations

### 2Linear Inequalities

### 3Measuring Systems

### 4Number Systems

### 5Direct and Inverse Proportion

### 6Algebraic Expressions

### 7Surds

### 8Linear Functions

### 9Factorising Quadratic Functions

### 10Quadratic Functions

### 11Quadratic Equations and Inequalities

### 12Algebraic Fractions

### 13Simultaneous Equations

### 14Inequalities in Two Variables

### 16Polynomial Functions

16.4Factor theorem

### 18Exponential Functions

### 19Logarithms

19.5Natural log: ln

### 21Vectors

### 22Matrices

### 23Trigonometric Ratios and Angle Measure

23.3Reference angle

### 25Bearings

### 26Graphing Trigonometric Functions

### 27Applications of Trigonometric Functions

### 28Trigonometric Identities

### 29Solving Trigonometric Equations

### 30Inverse Trigonometric Functions

### 31Angles, Lines, and Transversals

### 33Congruent Triangles

### 35Surface Area and Volume

### 37Set Theory

37.1Set notation

### 38Data and Graphs

38.8Pie charts

### 40Probability

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