In A level Maths, we learn that for small angles, trigonometric functions can be approximated as : sin θ ≈ θ cos θ ≈ 1 - 0.5(θ)²                tan θ ≈ θ (Where θ is in radians) But where do these approximations stem from? In this blog, we will cover what approximations are and why these approximations are valid. What does it mean to approximate? Approximating a value is essentially calculating a value that is si