A crash course in complex mathematical concepts

Fundamental trigonometric identities, i.e trig identities or trigo identities are equations with trigonometric functions that hold for any value you substitute into their variables.

These identities are essential tools when you want to solve trigonometric equations and perform complex calculations in mathematics, physics, or engineering. Understanding all the trigonometric identities can help you simplify seemingly complicated problems, especially in geometry and calculus.

The basics of trigonometry

Trigonometry is a branch of mathematics. At the heart of trigonometry are the trigonometric functions, which relate the angles of a triangle to the ratios of its sides.

The most basic trigonometric functions are ...