What is the fundamental period of `f(x) = (sin x+ sin 3x)/(cos x+ cos 3x)`

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

Fundamental period of f(x)=sec(sin x) is

(sin 5x + sin 3x)/(cos 5x + cos 3x) = tan 4x

Find the fundamental period of f(x)=cos x cos2x cos3x

Find the period of the function f(x) = (sin x + sin 3x)/(cos x + cos 3x)

what is the fundamental time period of f(x)=cos x.cos2x cos3x

Identify the correct statement the fundamental period of f(x)=cos(sin x)+cos(cos x) is pi

Period of function f(x)=(sin7x+sin3x)/(cos7x+cos3x) is

pi is the Fundamental period of (A) (1+sin x)/(cos x(1+cos ecx)) (B) |sin x|+|cos x| (C) sin2x+cos2x (D) cos(sin x)+cos(cos x)