[" If "(cos3x)/(cos x)=(1)/(3)" for some angle "x,0],[<=x<=(pi)/(2)," then the value of "(sin3x)/(sin x)" for "],[" some "x," is "]

IF (cos3x)/(cos x)=(1)/(3) for some angle x, then the value of (sin3x)/(sin x) for some x, is

If (cos3x)/(cosx)=1/3 for some angle x,0<=x<=pi/2 then the value of (sin3x)/(sinx) for some x is

If (cos3x)/(cosx)=1/3 for some angle x,0<=x<=pi/2 then the value of (sin3x)/(sin2x) for some x is

Which of the following is/are correct? (A) cos(cos pi)=cos(cos0)(B)cos x+(1)/(cos x)=(3)/(2) for some value of x(C)sqrt(1+102sqrt(1+99.101))=101(D)sin(1)-cos(1)<0

(cos3x-cos x)/(cos x+cos3x)

cos3x+cos2x+cos x=0

cos3x-sin2x=0

cos 3x+cos x-cos 2x=0

cos 3x+cos x-cos 2x=0