Trigonometric sums and summation formulas have long served as essential tools for elucidating periodic phenomena across mathematics and the physical sciences. These techniques entail the explicit ...

Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this Bitesize GCSE Maths Edexcel guide.

De Moivre's theorem: Polar form using argument and modulus; Statement and proof of De Moivre's theorem; Derivation of trigonometric formula; Calculation of higher powers and roots of a complex number ...

For centuries, students have learned that in a right triangle, the square of the hypotenuse equals the sum of the squares of the other two sides. Known as the Pythagorean Theorem, this ...

Revise how to use the sine and cosine rules to find missing angles and sides of triangles as part of National 5 Maths.