Duration: 3:55

38 views

0

The solution set of the equation \( 4 \sin ^{4} x+\cos ^{4} x=1 \) is
\( \mathrm{P} \)
(a) \( \mathrm{x}=\mathrm{n} \pi+\frac{\pi}{6} \)
W.
(b) \( \mathrm{x}=\mathrm{n} \pi \pm \theta \) where \( \cos ^{2} \theta=\frac{3}{5} \) and \( \mathrm{x}=\mathrm{n} \pi, \mathrm{n} \in \mathrm{I} \)
(c) \( \mathrm{x}=(2 \mathrm{n}+1) \frac{\pi}{2} \)
(d) \( x=2 n \pi \pm \frac{\pi}{3} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live