This video lecture from Vectors (F.Sc.second year Mathematics) covers: Question 1-2 of exercise 7.3. In these questions we find cosine of angle between two given vectors. We also calculate the projection of a vector along another given vector. 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.