# Page 2: Circle Theorems, Trigonometry, and Probability

Page 2 of the **Higher maths formula sheet pdf** focuses on more advanced topics, with a particular emphasis on circle theorems and trigonometry. The page begins with a detailed diagram of circle geometry, illustrating key terms such as radius, diameter, tangent, and chord.

**Definition**: A tangent is a line that touches a circle at exactly one point.

The sheet then lists several important circle theorems, including the relationships between angles in cyclic quadrilaterals and the properties of tangents. These theorems are essential for solving complex geometry problems in the **GCSE Maths formula sheet Edexcel Higher**.

Trigonometry is covered extensively, with the SOH CAH TOA mnemonic prominently displayed. The sine and cosine rules for non-right-angled triangles are also included, along with the quadratic formula for solving quadratic equations.

**Highlight**: The page provides formulas for calculating areas of various shapes, including circles, sectors, and polygons.

Probability concepts are introduced, including the addition and multiplication rules for independent events. The sheet concludes with formulas for volume calculations of 3D shapes and a brief section on statistical measures.

**Quote**: "P(A or B) = P(A) + P(B)" - This formula represents the addition rule for mutually exclusive events in probability.

This comprehensive **Formula sheet for year 11 higher math students 2024** serves as an invaluable resource for students preparing for their GCSE Maths exams, covering all the essential formulas and concepts required for success in the higher tier.