Trigonometry, if cos(3x)/cos(x)=1/3, then sin(3x)/sin(x)=?

sin(3x) & cos(3x), using De Moivre's theorem

Integral of sin(3x)/(1+cos(3x)) ❖ Calculus 1

Integral of sin^2(3x)cos(3x) ❖ Calculus 1

Express tan(3x) in terms of tan(x) using sin(3x)/cos(3x)

Proof of sin3x, cos3x, tan3x formula | trigonometry class 11 | by epselon

Solving a Trig Equation: cos(3x)=-1

Find the derivative of the function y = sin^3 x cos 3x.

4/5 Difficulty Polar Coordinates Question | A Level Furthermaths

`(sinx) /(sin 3x)+(sin3x)/(cos9x)+ (sin 9x)/(cos27x) = (tan 27 x -tan x)/2`

Integral of sin(3x)*cos(x)

sin(3x) in terms of sin(x)

Show that:`(sinx)/(cos3x)+(sin3x)/(cos9x)+(sin9x)/(cos27x)=1/2 (tan27x-tanx)`

Integral of sin^3(x)cos^3(x) (trigonometric identity + substitution)

Find the intervals in which f(x)=sin3x-cos3x, is strictly increasing or decreasing.

Maclaurin Series of f(x) = sin(3x)cos(3x) using Identities

Show that, (sin x)/(cos 3x) + (sin 3x)/(cos 9x) + (sin 9x)/(cos 27x) = 1/2(tan 27x – tan x).

How to remember sin 3x and cos 3x formula

AOD - I - [Delhi] Increasing Decreasing Functions- f(x) = sin 3x - cos 3x is strictly inc/dec.

PUC I Year - Trigonometric Functions - sin3x, cos3x and tan3x formula derivation