This video lecture from Applications of Trigonometry (F.Sc. first year Mathematics) covers: Question numbers 1-5 of exercise 12.4. In these questions we find the solution of oblique triangle when one side and two angles are given (case-l). Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.