11th Physics Basics

– Quadratic Formula: \(x = \frac{-b \pm \sqrt{b^2 – 4ac}}{2a}\) – Used to find the roots of a quadratic equation \(ax^2 + bx + c = 0\)【4:3†source】.

– Trigonometric Functions of Angle \(\theta\): \(\sin \theta = \frac{y}{r}\), \(\cos \theta = \frac{x}{r}\), \(\tan \theta = \frac{y}{x}\), \(\cot \theta = \frac{x}{y}\), \(\sec \theta = \frac{r}{x}\), \(\csc \theta = \frac{r}{y}\) – Relationships between trigonometric functions in a right triangle with angle \(\theta\)【4:3†source】.

– Pythagorean Theorem: In a right triangle, \(a^2 + b^2 = c^2\) where \(a\) and \(b\) are the legs and \(c\) is the hypotenuse【4:3†source】.

– Trigonometric Identities: Various trigonometric identities and formulas including sine, cosine, tangent sum and difference formulas, exponential expansion, logarithmic expansion, and the binomial theorem【4:3†source】.