What are some tips or techniques to solve the limit of trigonometric functions? is there any way to solve it more easily? Can you give some explanation regarding on how to solve the limits of trigonometric functions? and also for limits of inverse trigonometric functions.

Please answer this also with thorough explanation.

Determine whether the statement is true or false. Explain your answer.

1. A rational function can have infinitely many x-values at which it is not continuous.