Sine, Cosine, Tangent, Cosecant, Secant, and Cotangent are the trigonometric functions (or circular functions) of angles.They relate the angles of a triangle to the lengths of its sides.
sine (sin) = height / hypotenuse
cosine (cos) = base / hypotenuse
tangent (tan) = height / base
cosecant (cosec) = hypotenuse / height
secant (sec) = hypotenuse / base
cotangent (cot) = base / height
