যদি tan2thetatantheta=1, 0<=theta<pi/2 হয়, theta=? 

Explanation:

Another Explanation (5): দেওয়া আছে, \( \tan 2\theta \tan \theta = 1 \) এবং \( 0 \le \theta < \frac{\pi}{2} \). \( \tan 2\theta = \frac{1}{\tan \theta} \) \( \tan 2\theta = \cot \theta \) \( \tan 2\theta = \tan \left( \frac{\pi}{2} - \theta \right) \) সুতরাং, \( 2\theta = \frac{\pi}{2} - \theta \) \( 2\theta + \theta = \frac{\pi}{2} \) \( 3\theta = \frac{\pi}{2} \) \( \theta = \frac{\pi}{6} \) যেহেতু \( \theta \) এর মান ডিগ্রিতে চাওয়া হয়েছে, \( \theta = \frac{\pi}{6} = \frac{180^\circ}{6} = 30^\circ \) অতএব, \( \theta = 30^\circ \) 🎉