Prove that
sinx/ 2^n sin(x/2^n) = cos(x/2)cos(x/2^2)cos(x/2^3).....
use the identity sinx= 2sin(x/2)cos(x/2)
prove by induction... show that it is true for n=1 and assume it's true for n-1.
i don't understand this, can someone please explain this to me?
