What is the range of a cosine function?

The sine and cosine functions have a period of 2π radians and the tangent function has a period of π radians. Domain and range: From the graphs above we see that for both the sine and cosine functions the domain is all real numbers and the range is all reals from −1 to +1 inclusive.

Step-by-step explanation:

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Tutorconsortium307 Tutorconsortium307 · Answer 2 · 2022-06-18T22:06:08+02:00

The range of a cosine function is -1 ≤ cosx ≤ 1.

What is the range of a cosine function ?

When x = 180°, f(x)=cosx=cos (180°) = - 1

This is the minimum value of f(x)

When x=0°, 360°, f(x)=cosx=cos (0°) = cos (360°) = 1

This is the maximum value of f(x)

Hence we can say that the range of a cosine function is -1 ≤ cosx ≤ 1.

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