Identitas Trigonometri Sederhana
| \(\sin^2\:\alpha + \cos^2\:\alpha=1\) | \(\tan\alpha = \dfrac{\sin\alpha}{\cos\alpha}\) |
| \(1 + \tan^2\:\alpha =\sec^2\:\alpha\) | \(\cot\alpha = \dfrac{\cos\alpha}{\sin\alpha}\) |
| \(1 + \cot^2\:\alpha =\csc^2\:\alpha\) |
Rumus Aljabar Yang Sering Digunakan
| \(a^2 - b^2 = (a + b) (a - b)\) | |
| \((a + b)^2 = a^2 + 2ab + b^2\) | \((a - b)^2 = a^2 - 2ab + b^2\) |
| \((a + b)^3 = a^3 + 3a^2b + 3ab^2 + b^3\) | \((a - b)^3 = a^3 - 3a^2b + 3ab^2 - b^3\) |
| \(a^3 + b^3 = (a + b) (a^2 - ab + b^2)\) | \(a^3 - b^3 = (a - b) (a^2 + ab + b^2)\) |