All trigonometrical functions are

All trigonometrical function are

(A): The method of dimensions cannot be used to obtain the dependence of work done by a force when the force is inclined to the direction of displacement. (R): All trigonometric functions are dimensionless.

Consider the following statements: 1. The function f(x) = greatest integer lex,x""inR is a continuous function. 2. All trigonometric functions are continuous on R. Whict of the statements given above is/ are correct ?

All trigonometric functions have inverse over their respective domins.

All trigonometric functions have inverse over their respective domains.