E
Editor
Sep 18, 2022
If $\sin 2\theta +\cos 2\theta=1$, the general value of $\theta$ is
Difficulty: Easy
A:
$n\pi \pm \frac{\pi}{4}, n\frac{\pi}{2}$
B:
$n\pi \pm \frac{\pi}{4}, n\pi$
C:
$n\pi -\frac{\pi}{3}, n\pi$
D:
$n\pi +\frac{\pi}{3}, n\pi$
ID: 63273dbaca83163ac3a130c7