If $\cos x=|\sin x|$, then the general solution is

Q. General solution of $x$ for which ${\cos }^{2}x=\frac{\sin x\tan x}{6}$ is :

Q. Let [x] = the greatest integer less than or equal to x and let f(x) = sin x + cos x. Then the most general solution of $f\left(x\right)=\left[f\right(\frac{\pi }{10}\left)\right]$ is

Q. If $|z_1+z_2|=|z_1-z_2|$ then $\arg z_1-\arg z_2=$

Q. The general solution of $\sin 2x+\sin 4x+\sin 6x=0$ is/are