The function is .
Theorem :
\Any rational function is continuous at every number on its domain.
\Numerator : The domain of the trigonometric function is
and it is continuous in its domain.
Denominator : The domain of polynomial function is
and it is continuous in its domain.
Domain :
\All possible values of is the domain of the function.
The denominator of the function should not be zero.
\.
Domain of the function is .
The function is continuous at every number in its domain.
Domain of the function is .