If `8sin^(3)xsin3xsin3x=sum_(r=0)^(n)a^(r)cosrx` is an identity in x, then 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=

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

Suppose sin^(3)xsin3x= sum_(n=0)^(n) c_(n)cosnx is an identify in n, where C_(0), C_(1) , …..C_(n) are constants and C_(n) ne 0, 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 ________

cos^(3)xsin2x=sum_(x=0)^(n)a_(r)sin(rx)AA x inR , then