What are some Trigonometry integration homework equations?

[songoku]

Homework Statement

a. $$\int cos(\pi~sin~x)~dx$$

b. $$\int x~cos(\pi~sin~x)~dx$$

Homework Equations

integration

The Attempt at a Solution

can anyone help me getting started? Thanks

 

[HallsofIvy]

That cannot be done in terms of "elementary functions".

 

[songoku]

That cannot be done in terms of "elementary functions".

ok thanks a lot