(3x+sin3x)/(1+cos3x)

Number of solution(s) of the equation (sin x)/(cos3x)+(sin3x)/(cos3x)+(sin2x)/(cos27x)=0 in the interval (0,(pi)/(4)) is

What is the fundamental period of f(x)=(sin x+sin3x)/(cos x+cos3x)

Prove that: ,,(sin x+sin3x)/(cos x+cos3x)=tan2x

Prove that :(sin x+sin3x)/(cos x+cos3x)=tan2x

Period of f(x)=(sin x+sin3x)/(cos x+cos3x) is (Value of e=2.72 and pi=3.14 )

Prove that: (sin x)/(cos3x)+(sin3x)/(cos9x)+(sin9x)/(cos27x)=((1)/(2))(tan27x-tan x)

Show that: (sin x)/(cos3x)+(sin3x)/(cos9x)+(sin9x)/(cos27x)=(1)/(2)(tan27x-tan x)

If f_(n)(x) = (sin x)/(cos3x)+(sin 3x)/(cos 3^(2)x) +(sin 3^(2)x)/(cos 3^(3)x) +....+ (sin 3^(n-1)x)/(cos 3^(n)x)"Then" f_(2) ((pi)/(4)) + f_(3) ((pi)/(4))=

If quad f_(n)(x)=(sin x)/(cos3x)+(sin3x)/(cos3^(2)x)+(sin3^(2)x)/(cos3^(3)x)+....+(sin3^(n-1)x)/(cos3^(n)x) then f_(2)((pi)/(4))+f_(3)((pi)/(4))=