Trigonometry

The amplitude of a function is defined as the distance from the central axis to the maximum or minimum value … Read more

The cosine function is a trigonometric function that is periodic. A periodic function is a function that repeats itself over … Read more

The cosine of an angle is found by relating the sides of a right triangle. The cosine is equal to … Read more

The graph of cosine has the main characteristic that it is periodic with a period of 2π. This means that … Read more