What is the limit of sin(x) as x is approaching infinity?

Also, what is the limit of tan(x) when x is approaching pi from the right? (RIGHT HAND LIMIT)

Last, what is the limit of tan(x) when x is approaching to pi?

And last one, what is the limit of f(x) (4/x , x less than 1) and (x^3 - 2x + 5 , x greater than 1.) This function is probably peicewise.

Thank you very much.

Thank you!