Question

prove that cos 4x + cos 2x + cos 3x by sin 4x + sin 2 x + sin 3x is equal to cot 3x​

Answer 1

$\huge \bf \underline{ \underline{Solution}}$

See the above attachment :)

Answer 2

See the above attachment and mark her Brainliest $\huge\color{red}♡$