Expand your horizons with the diverse and informative answers found on IDNLearn.com. Join our interactive Q&A community and get reliable, detailed answers from experienced professionals across a variety of topics.

Determine the domain of f(x)=cos(x).
A. (-[infinity],[infinity])
B. (-1,1)
C. (-[infinity],1)∪(1,[infinity])
D. [-1,1]