This video lecture from Applications of Trigonometry (F.Sc. first year Mathematics) covers: Question numbers 1-2 of exercise 12.1. In these questions we find the values of trigonometric functions using natural sine,cosine and tangent table. 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.