True or false : The sine function is an even function.

True or false : The sine function has period $2\pi.$

Select the interval on which  $f(x)=\sin\sin\frac{x}{2}$  is increasing?

Select the interval on which $g(x)=\sin\sin2x$  is decreasing?

True or false : The sine function is symmetric on the origin.

At what quadrant does the graph of $f(x)=\sin x\ \ lies\ if\ \ \pi<x<2\pi\ ?$

Select the interval on which  $g(x)=\sin\sin2x$  is increasing?

Select the interval on which $f(x)=5+\sin\sin\frac{x}{2}$   is decreasing?

Select the interval on which  $f(x)=\sin\sin x$  is increasing?

1. Select the interval on which $f(x)=\sin\sin\frac{x}{3}$  is increasing?