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Trigonometrical Equations
easy
જો ${\sec ^2}\theta = \frac{4}{3}$, તો $\theta $ નો વ્યાપક ઉકેલ મેળવો.
A
$2n\pi \pm \frac{\pi }{6}$
B
$n\pi \pm \frac{\pi }{6}$
C
$2n\pi \pm \frac{\pi }{3}$
D
$n\pi \pm \frac{\pi }{3}$
Solution
(b) ${\cos ^2}\theta = \frac{3}{4} = {\cos ^2}\left( {\frac{\pi }{6}} \right) $
$\Rightarrow \theta = n\pi \pm \frac{\pi }{6}$.
Standard 11
Mathematics
