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Trigonometrical Equations
medium
यदि ${\tan ^2}\theta - (1 + \sqrt 3 )\tan \theta + \sqrt 3 = 0$, तो $\theta $ के व्यापक मान हैं
A
$n\pi + \frac{\pi }{4},n\pi + \frac{\pi }{3}$
B
$n\pi - \frac{\pi }{4},n\pi + \frac{\pi }{3}$
C
$n\pi + \frac{\pi }{4},n\pi - \frac{\pi }{3}$
D
$n\pi - \frac{\pi }{4},n\pi - \frac{\pi }{3}$
Solution
(a) ${\tan ^2}\theta – \tan \theta – \sqrt 3 \tan \theta + \sqrt 3 = 0$
$ \Rightarrow $ $\tan \theta (\tan \theta – 1) – \sqrt 3 (\tan \theta – 1) = 0$
$ \Rightarrow $$(\tan \theta – \sqrt 3 )\,\,(\tan \theta – 1) = 0$
$ \Rightarrow $$\theta = n\pi + \frac{\pi }{3}$, $n\pi + \frac{\pi }{4}$.
Standard 11
Mathematics