The solution of the equation $4{\cos ^2}x + 6$${\sin ^2}x = 5$
The solution of the equation $4{\cos ^2}x + 6$${\sin ^2}x = 5$
- A
$x = n\pi \pm \frac{\pi }{2}$
- B
$x = n\pi \pm \frac{\pi }{4}$
- C
$x = n\pi \pm \frac{{3\pi }}{2}$
- D
None of these
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