👉 In mathematics, a sine function is defined as the ratio of the length of the side opposite to an angle in a right-angled triangle to the length of the hypotenuse. This is written as: sin θ = Opposite / Hypotenuse For example, if we have a triangle with sides 3 units (opposite) and 4 units (hypotenuse), then sinθ = 3/4. This definition can be extended to any angle in a right-
