The cosine of an angle is a(n)
proportion
ratio
finite number
imaginary

Option B is correct that is The cosine of an angle is a ratio.

Step-by-step explanation:

In a triangle ,

Cosine of an angle is written as fraction of adjacent side by Hypotenuse side of right angled triangle.

or we can say that Cosine of an angle is written as fraction of Base side by Hypotenuse side of right angle triangle.

Fraction is also known as ratio.

Therefore, Option B is correct that is The cosine of an angle is a ratio.

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.