FSc Math Book1, Ch 10, LEC 2: Fundamental law of trigonometry part 2

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This video lecture from Trigonometric Identities (F.Sc. first year Mathematics) covers: detailed conceptual lecture on fundamental trigonometric identity and its proof. Find more e-learning material and educational video lectures in Urdu at maktab.tayyabhassan.com. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.