The antiderivative of cos(x) is sin(x) + c, where c is an arbitrary constant. The antiderivative is more commonly called the indefinite integral. One must add an arbitrary constant into the antiderivative because sin(x) + c differentiates to cos(x) for all values of c.
Continue ReadingThe cosine function, cos(x), is defined as the ratio between the adjacent and hypotenuse edges of a right-angled triangle that includes the angle x. The cosine function is a periodic function that is the derivative of the periodic function sin(x), which is defined as the ratio between the opposite and hypotenuse edges of the triangle containing angle x.
Learn more about Calculus