MCQ
The equation $3\sin^2x + 10$ \cos $x – 6 = 0$ is satisfied, if ............
- A$x =2 n \pi \pm \cos ^{-1}\left(\frac{1}{6}\right)$
- ✓$2 n \pi \pm \cos ^{-1}\left(\frac{1}{3}\right)$
- C$x = n \pi \pm \cos ^{-1}\left(\frac{1}{3}\right)$
- D$x = n \pi \pm \cos ^{-1}\left(\frac{1}{6}\right)$
