6.3.2 Application of dot and cross products in plane Trigonometry
Chapter 6: Chapter 6 · MATHEMATICS-VOLUME 1 · EN medium
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We apply the concepts of dot and cross products of two vectors to derive a few formulae in plane trigonometry. Example . (Cosine formulae) With usual notations, in any triangle ABC, prove the following by vector method. (i) bc (ii) ca B (iii) ab C With usual notations in triangle ABC , we have BC a CA and AB .
📖 Class 12 Mathematics English Volume 1 2025 Edition www.tntextbooks.in · Page 233
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We apply the concepts of dot and cross products of two vectors to derive a few formulae in plane trigonometry. Example . (Cosine formulae) With usual notations, in any triangle ABC, prove the following by vector method. (i) bc (ii) ca B (iii) ab C With usual notations in triangle ABC , we have BC a CA and AB .
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