Revision sheet · Mathematics

Trigonometry

sin²A + cos²A = 1: $sin^{2} A + cos^{2} A = 1$
tan A = sin A ÷ cos A, and the reciprocal ratios: $tan A = \frac{s i n A}{c o s A}$
Heights and distances: h = b tan θ: $h = b tan θ$