No, actually x is the variable in mathematics. cos(x) or cosine is considered a trigonometric function with a variable x.
No
Sine and cosine are cofunctions, which means that their angles are complementary. Consequently, sin (90° - x) = cos x. Secant is the reciprocal of cosine so that sec x = 1/(cos x). Knowing these properties of trigonometric functions, among others, will really help you in other advance math courses.
sine and cosine
-cosine x
Sine and cosine
Answer:x is a common variable in math. It could also possibly refer to the x-axis on a graph, and is often used as a symbol for multiplication."f(x) = ... " is the classic way of writing a function. For example f(x) = x+3, then f is the function, x is the input, (x+3) is the output.sine (x), cosine (x), are functions in trigonometry
An even function is one where f(x) = f(-x) For cosine, cos(x) = cos(-x), thus cosine is an even function.
Secant is a trignometric function. In a right triangle, the secant of an angle is the hypotenuse over the adjacent side. It is also the inverse of cosine. For example secant(x) = 1/cos(x)
The Y-Intercept of the cosine function is X = 0, Y = cosine(0) = 1.
The cosine of 2pi is 1. In fact, for every integer N, the cosine of 2 N pi is 1.
False; the cosine function is an even function as cos(-x) = -cos(x).
The argument of the cosine function must be (2pi/3)*x radians