This video lecture from Differentiation (F.Sc. second year Mathematics) covers: Question numbers 2-5 of exercise 2.8. In these questions we apply the taylor’s series to prove the given equations and to find the trigonometric values of given angles. 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.