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What is the domain of y = cos θ

User Adi Barda
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2 Answers

4 votes
all real numbers / all x
if you're asking for range as well then its -1<x<1
User Darish
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1 vote

Answer:

The domain is all real numbers or
x\in(-\infty,\infty)

Explanation:

The definition of domain is :

Domain is the set of x values for which the function is defined.

The given function is y = cos θ and we know that θ can take any value. In other words, for any value of θ, the function y = cos θ is defined.

Therefore, we can conclude that the domain of y = cos θ is the set of all real values.

In interval notation we can write it as


x\in(-\infty,\infty)

User Bhabani Shankar
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