Finding Roots of b1 and b2 Between 0 and 30

[85David]

Ok, i got two funktions:
b1:=(x/10)+sin((x/3)+(Pi/2));
and
b2:=(1-2*cos((x/4)+(Pi/2)));

I need to determine all the roots between 0 < x > 30

If I plot the functions i see that there should be two roots
plot([b1,b2],x=0..30);

But when try to get maple to calculate the roots It only comes up with one root:
fsolve(b1=b2,x=0..30);
12.83815087

Thanks and sorry for my bad english.

 

[whozum]

Plot the function and get an idea of where the roots are, then tell maple to find the roots in an interval that contains only one of the two roots. So if the roots are 5 and 15, then fsolve([b1,b2],x=0..10) and for the other one 10..30