Login   |      Register
English    中文


Cosine Function Online Calculator



App description

The adjacent side of angle a is called the cosine of ∠A, which is called cos A, that is, cos A = the adjacent/hypotenuse of angle a (right triangle). Denoted as cos A = x/r.

The definition domain of cosine function is the whole set of real numbers, and the range is [-1,1].

It is a periodic function with a minimum positive period of 2 π. When the independent variable is 2kπ (k is an integer), the function has a maximum value of 1;

When the independent variable is (2k+1)π, the function has a minimum -1. Cosine function is even function and its image is symmetric about y axis.

y=cosine(x)

X(deg) X(Rad) Y=cosine(X)
180 ̊ π -1
150 ̊ 5π/6 -0.866025
135 ̊ 3π/4 -0.707107
120 ̊ 2π/3 -0.5
90 ̊ π/2 0
60 ̊ π/3 0.5
45 ̊ π/4 0.707107
30 ̊ π/6 0.866025
0 ̊ 0 1

Usage example

x:30 radian

Click "calculate" to output the result

Cotangent (x):0.866025

 

    Sign in for comments!

Comment list ( 0 )