Cos(t): The cosine function, denoted as cos(t), is another trigonometric function that relates an angle t to the ratio of the length of the adjacent side to the length of the hypotenuse in a right triangle.
Tan(t): The tangent function, denoted as tan(t), is a trigonometric function that represents the ratio between sin(t) and cos(t). It relates an angle t to the ratio of sin(t) divided by cos(t).
Periodicity: In trigonometry, periodicity refers to how certain functions repeat their values after specific intervals. For example, sin(t) has a period of 2π radians or 360 degrees, meaning it repeats its values every 2π radians or 360 degrees.