if `sin^3 x-sin3x=sum_(m=0->n) c_m * cosmx` is an identity in `x`, where `c_m` 's are constant then the value of `n` is

if sin^(3)x-sin3x=sum_(m=0rarr n)c_(m)*cos mx is an identity in x, where c_(m)^(=0rarr n) are constant then the value of n is

Suppose sin^3xsin3x=sum_(m=0)^n C_mcosm x is an identity in x , where C_0,C_1 ,C_n are constants and C_n!=0, the the value of n is ________

Suppose sin^3xsin3x=sum_(m=0)^n C_mcosm x is an identity in x , where C_0,C_1 ,C_n are constants and C_n!=0, the the value of n is ________

Suppose sin^3xsin3x=sum_(m=0)^n C_mcosm x is an identity in x , where C_0,C_1 ,C_n are constants and C_n!=0, the the value of n is ________

If 8 sin^3x sin3x=sum_(r=0)^n a cosrx is an identity, then n=

sin^3x.sin3x=underset(mrarr0)(oversetnsumC_mcosmx is an identity in x,where C_m s are constants then find the value of 'n'.

If 8sin^(3)xsin3x=sum_(r=0)^(n)a^(r)cosrx is an identity in x, then n=

If sin ^(3) x sin 3 x=sum_(r=0)^(n) a_(r) cos r x is an identity in x, then n=

Suppose sin^(3)x sin3x=sum_(m=0)^(n) C_(m) cos mx is an idedntity in x , where C_(0),….C_(n) are constant and C_(n)ne0 then the value of n is ___________