FSc Math Book1, Ch 10, LEC 5: Trigonometric ratios of allied angles part 1

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This video lecture from Trigonometric Identities (F.Sc. first year Mathematics) covers: detailed discussion on concept of allied angles and trigonometric ratios of allied angles. Find more e-learning material and educational video lectures in Urdu at These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.

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