FSc Math Book2, Ex 7.4, LEC 19: Q 8-9

This video lecture from Vectors (F.Sc. second year Mathematics) covers: Question 8-9 of exercise 7.4. In these questions we prove the identity sin(α-β) = sin(α).cos(β) - cos(α).sin(β) using vector analysis approach. 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.