Trigonometry and Properties of Quadratic Equation သူရိန်မင်း الجمعة, نوفمبر 23, 2018 If $ \displaystyle \tan A$ and $ \displaystyle \tan B$ are the roots of the equation $ \displaysty…
Law of Cosines and to Find Extremum by Completing Square သူရိန်မင်း الخميس, نوفمبر 22, 2018 In $ \displaystyle \Delta ABC$, $ \displaystyle AB=(5-x)$ cm, $ \displaystyle BC=(4+x)$ cm, $ \dis…
