calling trigonometric function and constants in a cpp tab

Hi,

I added a tab to my sketch (foo.cpp), where I declared a class Foo.
I tried to use PI constant and sin() function whitin the class but
I obtain the error:

PI was not declared in this scope
sin was not declared in this scope

Which is the proper header?
How can I include it?

I tried (by chance) this header:

#include<Math.h>

The inclusion is ok (no error)
but trigonometric constant /function
are still not declared in the scope.
Thanks

Edit: The comment below is the solution (didn't see the uppercase M).

What about?

#include<math.h>

Do the same result? BTW, take a look to this.

I tried (by chance) this header:

#include<Math.h>

You might have better luck with a space and proper capitalization.

#include <math.h>

Hello,

Try to add

#include <arduino.h>

You don't need to include math.h .

guix:
Hello,

Try to add

#include <arduino.h>

You don't need to include math.h .

Would be better add:

#include <Arduino.h>

don't?

Both ok...

The winner is......

#include <Arduino.h>

with capital letter!
Thanks, it works